Replacement or refurbished doors for series 3

[DrFeelgood]

I'm now the proud owner of a 1976 series 3, which was cheap enough to forgive it the few gremlins I've found! The doors are in a bit of a state however (the previous owner had fitted 90 doors, with pushbuttons, but they were bent in a break in attempt). Do any of you know anyone who refurbishes doors as I'm not keen to buy new ones? Or someone who sells refurbished doors (either original S3 ones, or 90s - not too bothered)? Thanks!