[Armstrong92]

I recently purchased, a gas gas ducados edition from 1992,
the bike is a bit rough round the edges, the guy i bought it from told me it recently had a new water pump installed, so naturally when i got it home i gave it the usual, new plug, new oil/oil change, new cables all round as they were ROUGH, but i have to know were there any problems/common faults with this bike? ive sent it away to get a new gear selector pin as the one in it was buggered, and was wondering if it'd be worthwhile to get a rebuild etc.. as im hoping it will just be the gear selector and that'd be it fixed, also if anyone has a wiring diagram for this bike, id be greatfull as the daft bloke who wired it had no clue what he was doing atall! thanks