What I was saying is that if you fit the wings and get their trailing edge parallel with the bulkhead, you have a better chance of making the whole lot line-up with acceptable gaps. if you fit the doors first, then might well find the wing to bulkhead gap is astray. Just seen it done this way on a 110 rebuild and it ended with very acceptable gaps all around and doors that close with ease.Properly built and with a decent bulkhead it is not bendy and random. Far from it.
The wings do absolutely nothing to firm up the bulkhead.
The Defender’s reputation for poor gaps and creaking, leaking and whatever else is mainly caused by people not knowing how to put them together correctly and being cheapskate on parts.
The amount of people who criticise the Defender for all the above have usually only driven thirty year old rotten Tdi’s after people have been messing.