I just rebuilt my transmission and putted everything back together. I can row through the gears when the motor is not on ,but not when its on. I try to put it into any gear with no sucess. Its hard as a brick wall. The shifter will just refuse to go into gear. Does anyone know what kind of problem I might be having? I suspect maybe it can be the clutch not being put back on right, or the throwout bearing isn't adjusted correctly.