Hello all and many many thanks for the responses. I am sorry for the late reply here. Let me update you more on this 'odyssey' via so called experts.
Ok, so - first an indy FL specialist looked at the issue during a routine service. He declared everything was fine - don't get me wrong, he is a great guy and never replaces anything he does not genuinely believe needs to be replaced. During the last major service, we replaced front disks and pads. The rear - were deemed 'fine'. Ok - so - a few weeks go by. The hand brake is 'errr, well - not good - in fact - it will not hold on our steep hill on the road out of the farm.
I now have more information. That being, he actually DID find the rear wheel cylinders leaking slightly inside the covers (which - according to 'rave' is ok if small. however, he decided to replace the cylinders, no worries, they are cheap as chips.
Ok... so I was not aware of the cylinder replacements as there were many other things replaced and the cost here was minor.
Let us flash forward.
On to land rover dealer (local) - later to find NOT MAIN DEALER - but a 'multi marque' dealer. -
Anyway - first visit - they check - they say all is fine - they don't charge - I leave.. I get home, test on the 'hill' - same old same old - cr&p hand brake.. SIGH !:-(
Handbrake still not holding on STEEP hills. - so back it goes.....
THIS time, they
actually inspect - they
said they did first time - however - this time, they must have actually 'looked' - I guess first time they tried the HB on a small slope and declared it ok.... ho hum//////
NOW - they decide to quote me nearly 500 EURO for a 'repair' - they say the following.
The cylinders fitted are not genuine land rover - well - err ok - tough...
They 'say' the cylinders are slightly narrower than the genuine -err - ok....
They 'say' the auto adjusters are at the absolute maximum, the brake shoes - however - are in great condition.. their conclusion is that the fault is in the 'after-market' cylinders. They quote for new 'genuine' cylinders, brake shoes as a matter of course, and 'skimming' of the existing drums.. (the drums are 250 EURO EACH here.) - NOTE - they DID NOT recommend changing the existing drums ! - simply skimming them - which MUST make matters far worse imho)
Ok, time to sit and think.... (and PLEASE - PLEASE correct me if you disagree ???)
In my mind - logical deduction - first off, a slight difference in 'width' of the rear cylinders - providing not drastic - will not cause this problem . The adjuster will compensate for this - it has a minimum and maximum setting.
Now, it IS true the adjusters were at MAX and could go no more (This certainly could affect the efficiency of the hand brake !.)
HOWEVER, WHY did the adjusters reach maximum... I cannot see how a slightly narrower cylinder can cause this. I CAN see that severely worn shoes COULD cause this - but they were not worn much.- so not shoes.
My conclusion - I think they are all talking ballcocks. - especially wanting to 'skim the drums ! yikes !!!!!!!!. - I cannot really believe that was advice from anyone with an IQ above single digits.
The obvious thing is that the drums are worn beyond their limit. (255.5) - BUT is appears none of these so called experts have bothered to measure that or - deduce how the issue could happen !!!. - the FL has done 130 K miles.. it has probably had the drums 'skimmed' before - they seem to do that here in Portugal........
To me, this was the ONLY explanation that would fit the scenario with hardly worn pads scenario - and adjusters being at max !
MY solution, is - (to me at least) NEW brake drums. !
Rimmers UK - 17 quid each inc vat., (Aftermarket)
Got them delivered, and NOW fitted - (I DID order new shoes at the same time (OEM)..)
NOW,
low and behold - hand brake is working properly....
there is a moral here - I am unsure as how to phrase it - but it goes something like -
there seems to be a lack of 'sense' in the so called 'experts' - I can only talk here in Portugal !!!!.
Surely - there is absolutely NO WAY the adjusters could be at max with hardly worn shoes ? - (UNLESS the DRUM was worn beyond tolerance. ) - Cylinders would expand to the LOWER limit (fixed mechanically) or the adjuster - then also 'expand' to the theoretical 'upper' limit. - providing the piston(s) travel in the cylinders can compensate, there is no way (imho) that the adjusters (being fixed min and max) could be at fault unless they were not mechanically sound (which they are!)
Anyway- ALL is fine now - the 'new' cheapo - aftermarket drums 'cured' the problem - still with the same' non genuine' - narrow' cylinders!
WHY THE F&^K didn't ANY of these guys measure the drum - or at least logically deduce it was the ONLY potential issue... aghhhhhhhhhhhhhhhhhhh
Anyway again.... from earlier discussion, re pre 2001 / post 2001 - the rimmer after-market drum is EXACTLY the same part.!
SO, problem now solved.. it is rather frustrating that the customer has to TELL / ADVISE (and slightly 'discuss / ARGUE' with the bloody garage / dealer WHAT the problem is !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! until they finally admit that - ooooooooooops - they were wrong..
at least they did not charge for fitting.. (They were too embarrassed me thinks !)
Frustrated in 'Portugal'
But happy all is good.

FINALLY - with no help from the so called experts who looked at it...
I will go and bang my head against a wall - or, preferably - theirs !