My L120 started making loud metal grinding noises from the transmission. I took the transmission apart and seen that the gears were wore out,so I ordered a new gear kit.I cleaned out the tranny,and only had metal shavings on the gear side,put new gears in and new synthetic oil 5w-40w.I then installed in my 120.When I tried too get it too move jacked up with wheelers off axel would not turn,then read on line I had too purge the air out.after following purging instructions it would turn axels but when I grabbed axel it stopes.I tried several different times and ways on purging, but still can't it too move under pressure.talked to tuff torq about my k46 problem, after purging it he said I need to replace the pump and moter,but it moved fine before new gear kit.Does anyone have any suggestions