I recently purchases a 2003 GX 45 front end loader. loader, hydraulics, 4X4, rear lift and gauges all work. When bushog attached, pto would not operate. I removed bushog, the pto would spin but I could stop with my hand. Gauge light is highlighted when engaged. PTO stops when not engaged but does not stop spinning when clutch is pushed. Is there a sheer pin in the pto gearbox? There are 2 slots for levers above pto lever but only 1 is present and it does not move. Do either of these 2 levers affect pto? Any suggestions would be greatly appreciated. dl