D1 door seals

Hi all. Been playing mackamole with the water leaks and have 1 left which `I have found some information on but not sure if it is applicable to my issue, which is now only on the passenger side.
I've replaced the sun roof seals, and the roof bar gaskets, checked and extended the drain hoses -b all ok.
Taken off front wings and welded areas of concern on the square section reinforced]cement that runs to headlight body mount, welded gaps where the inner wing meets the bulkhead and resealed all that area. That stopped a major leak down the inside of the inner wing seam.
Next replaced the windscreen, glaziers and body shop ensured no corrosion anywhere in the aperture, no issues at all (rats).
Took of plastic scuttle cover loosened heater inlet bolts and covered/filled in with dinitrol sealant, and bathed the seam there with dinitril cavity & underbody sealant. Using endoscope and a hose there is definitely no water emanating from the front of the vehicle.
There is however, water escaping over the top of the new door seal, at the front bottom corner. Its not coming in through the door, it appears to run down between the door metal and the opposing face of the door seal, then comes over the top and pools in the foot well.
The only advice I've been able to find is to apply a sealant to the flange that the door seal pushes onto, using the sealant `I've attempted to push the seal upon a bit so it protrudes higher in the door aperture, waiting for that to go off before I tip another load of water over it.
The seals are the black ones from Rimmer, CFE500580Black.
Any ideas anyone?
Andy

Forgot to say, I've been through the water ingress manual and completed all of those tasks as well.

Hi, I've packed out the seal where it fits onto the aperture with a thick sealant, `I've checked that the seal touches the door as there is a transfer of engineer's blue from the seal to the door skin. Waiting for the sealant to dry now before tripping more water over it.
It only leaks when directing water at the door to body gaps, over the windscreen and roof if careful to keep away from the door gaps there are no leaks.
By drill holes do you mean as to provide a drain? (if all else fails)
Cheers

Andy

If the door seals are iffy, replace with D2 ones - 1000X better.

At the base of the windscreen, there is a massive hole, sealed with the seam ****ty sealer they used down the seams behind the front wings. I'd have thought the windscreen fitters would have found it if it was an issue, but if it's hasn't been replaced with decent quality sealer, I can alsmost gaurantee it'll have clagged out by now.

Thanks, I'll take the scuttle covers off again and check that. The seals I got from Rimmer were labelled as Disco2 seals, I have noticed there is a kink in the sealing tube as it folds around the area where the door mirror is, like a S shape. The seal and mounting are dry above, the groove behind the tube is wet down to just behind the front corner. I had to sponge about 2 litres out after the all day down pour here in north Wales, the car was parked on a steepish slope nose down which mazy exacerbate it. I'll try and take a picture of where it is coming through tomorrow.