exmaark mower drive does not work

[llwmidridge@hughes.net]

while I was putting the z turn mower up the bolts that hold the front of the deck fell off and dropped the front edge of the deck. This caused the mower to not go up the ramp to the shed. The deck hit the ramp and when I tried to go up the ramp the steering sticks got hard to push and the drive motor would not move. Seems the fluid did not bypass or the relief valve did not open. Did I screw something up?