I got 3000 ford, gas, 8 speed. The problem I have I cannot engage the PTO with clutch pedal all the way to the floor while engine is idling. If I stop the engine, the PTO level will engage the PTO shaft, i can crank the engine and the PTO shaft turns over the brush hog blades. so, do I have a problem with the 2-stage clutch, is plate "frozen?"