ACE pipe

After several unsuccesful attempts at sorting out a leaking ACE pipe on the valve block on my 2000 TD5 I have just had another go at it. Cut the pipe this time and joined it with a compression joint. Got the O rungs nicely seated etc. Put it all back together and its now flooding out. Pull the pipe off again and its sheared off on the ridge where the collet goes. So, I need a new pipe. Just want the section to go into the valve block since I'm joining it.
Can find part no RQB000380 as the rear section of the feed from the pump. Seems to be the cheapest option.
Does anyone know if this is definitely the right end of the pipe? I don't want to end up with the pump end.
Love the system but I'd like to get hold of the halfwit at Landrover who didn't seem to know about standard hydraulic hoses. Talk about re-inventing the wheel.

replace these bits first
1. Britcar (UK) Ltd > RVW100010 ACE VALVE BLOCK PIPE SEALS (G)....reused o-rings dont keep the 135 BAR
2. Britcar (UK) Ltd > ANR6700. COLLET PIPE CONNECTOR ACE DIS11 (P)

u might escape cheaper and u'll need these even with a new pipe

I know I'll need new O rings but unfortunately I have to change the pipe. The fracture is on the ridge that engages with the collet. Its such a clean break it almost looks machined. I suspect that was the leak all along. Presumably when the ridge is formed, the metal must get thinner at that point so causing a weakness.

What i know is that the 2000 generation Disco was fitted with 1 piece pipes so u will have to cut the original pipe and join it with the new one(the rear end part)