Hi all,
So this is my experience after having been through the process described here. Firstly thanks to all who have posted photos and descriptions about how to remove door panel and possible remedies. I did the following:
1) removed screw(s), in my case just one, rest left out I’m guessing by previous attempt to repair
2) removed panel using bicicly tyre levers, they worked pretty well, starting bottom left hand corner and working round and up as recommended here
3) removed latch and filed off a little on both sides but not the back, the greased and reinstalled to check it open and closed smoothly. Filing freed it up just enough for it to return nicely.
4) reinstalled panel only to find that the plastic handle used to push the metal flange was folded inwards and upwards! As much as I tried to force it back into place by pulling on the panel, impossible. So please make sure this plastic piece is in the right place as you move the panel up to engage. I lifted the metal flange upwards whilst I put the panel in place to make sure it was above the plastic lever. There is so much flex in the panel here that in the past I forced the plastic to go up and into the panel, which generated the need to do this whole job. Anyway, on second attempt and miraculously not breaking any plugs, I got the panel back on and all functioning.
So, after 18 years it finally functions OK. Can’t believe that VW haven’t resolved a very simple issue over all these years, making that rubber stop just too tight. Frustrating that we all have to spend time to fix it. At least mine is an older version but that this is still happening to much more recent models escapes me.
Without this forum I would not have even tried, so again a big thank you to all.