2Lucas, Thanks!!
2Ravenplucker,
1. I'll use Conundrummer's gears in an update, if he/she doesn't mind!
2. The clearance issue i do want to sort but i'm a little afraid of compromising the ride, so ive cheated a little and set the groung to a different collision layer to the gears!
3. The linkages aren't really modified much but they are just bent a little to imrove the performance and once i'd got it so smooth i didn't want to change anything.
Thanks for a bit of constructive critisism, it'll help a lot as i'm going to a work experience interview and i planned to show them this!!