I'm having a problem with my clutch. It started engaging lower and lower, until it wouldn't release anymore. I can get the car into gear if the engine is off, but the moment the engine is on and i push the clutch all the way in, no luck. I have replaced the cluth plate, presure plate and release bearing, but it is still doing the same thing. I looked at the master and slave cylinder, but they are not leaking and the slave cylinder is pushing out all the way. I look at the clutch fork and it has not jumped a tooth or anything, but it is rubbing against the gearbox frame about 1cm into it. By this I mean there is an indentation of the forx on the gearbox frame. I'm not sure what to look at any more. I have taken the gearbox out 3 times now in case things were not lined up, but they are. Any help would really be appreciated.

Cars & Trucks - Fiat - UNO