I realize this tractor is borderline of being too late a model to fit in this board, but I'm desperate here. Randomly, when you start the tractor, it will not move. Any gear, nothing happens. Just like being in neutral. Park works as it should. If you keep shutting it off and starting it enough, it will eventually work properly, then you may push the clutch in once or ten times, then it suddenly won't move anymore. Obviously, it's a microswitch or relay or something, but the schematic on the IH Parts site doesn't show much, and the manual doesn't either. Hoping someone with a similar model machin has had a similar problem.