A couple of yr's ago I split my 45, and put in a new transmission clutch. I just put back the original shims, that was in it, and couldn't get the handle to stay locked back, when the engine was running. The IT manual said to shim it to .030 clearence, however I couldnt make up my mind how to use the feeler guage, with the pressure of the disks rubbing on the blade. The IT manual said to move the driven discs, and spacer discs foreward, and measure between the pressure plate, and rear driven disc. It sounds pretty straight foreward, however, when I move them foreward with a screwdriver, and let go, they relax, and rub on the feeler guage. Should I set the gap, on a .030 guage pinched in to the point that I can just veryly slide it with some force,from my fingers? or should it be looser? The goal is to have the clutch handle lock, and stay locked, while running. I have had it tied back with rope for the last two yr's, so I could use the tractor. Is there some other adjustment, that I am not addressing?