I just bought a 2000 L35 with 1500 hrs. on it The lever to engage the front wheel drive just falls down when you pick it up and let go. Looked under and the roll pin is there and the shaft is moving going in to the transmission. Can't find anything on the forum about this problem. If it's broken inside can it be fixed with out splitting the tractor? The front wheels are engaged when I lifted it off the ground with loader and hoe. Any help would be great thanks. New here.