I'd second BDA, the fit of Lotus panels does seem to have quite a variation. My doors fit reasonably well, the front bonnet is ok front & sides but with a slight kick up at one corner. A distorted panel I'd guess. The rear deck is hopeless, get it to fit at one edge and the other drops or rises from the shell, it's a case of getting the best you can. Original panels, no significant crash damage, it's just that cottage industry that was 1960s Lotus !
They'll have changed moulds several times during the production runs and that's probably the reason for variation in fit, they'll have had some dimension drift as new moulds were made.
As BDA posted, the Elan the S1,S2 & S3 doors were good until some time in the S3 production they started to move outside the body. No amount of adjusting would get them to fit properly so most folks went for a good fit at the front and top rear with the lower rear sitting proud of the body - as Lotus did at the time.
When the cars started to get restored to higher standards then you'd cut the panel to bring the outer skin in line with the body. After 40+ years of decidedly un-aerodynamic doors I decided to do mine a few years back and now, at 52yrs old, the doors fit..... Lotus & cottage industries y'know
Brian