Hey guys I could use a little help. I am looking at a 1999 B2400HST 4x4 with what I think might be some issues. First there is a small oil leak comming from the center of the tractor. Next if I shake the tractor side to side there is a lot of play in the rear wheels. Finally I am confused as to how the pto levers actually work. If I engage the low speed the rear pto spins, if I engage the high speed the rear does not spin but the the mid does. Is this the way it is supposed to work. The rear only works on low? Thanks