I have got a 843 bobcat that has issues with the right side drive. It has no power to wheels, I have already tore down that drive motor and drive pump. didn't see anything wrong there, so I reassembled and installed a new filter. started it up and still no power to drive those wheels. Left side drives just fine, so I thought maybe i had messed up the motor timing. So I swapped motor from right to left side, but the problem stayed on the right side. A warning light comes on when I move the right stick, but not when I move the left stick. I'm pretty much lost from here, please help.