I thought I'd share my joy in finally eliminating an annoying creak in my 96 twinny
The noise came from the passenger side, was worse when the car was cold, and when going over bumps etc.
I figured it was just a couple of pieces of plastic rubbing against each other, and had my gf press/hold various parts of roof, door card, seating, dash etc as I drove.
But I never found the noise until I tried looking when the car wasn't moving...
I opened the passenger door and leant on the kickplate - and there was the creak!
I didn't have any silicon lube, but AutoGlym Vinyl/Rubber Care worked a treat, applied along the outer top edge, by pulling back the rubber seal and squirting in the gap.
So after months of searching, an instant fix!
The only downside is now I notice all the other "interesting" sounds even more!