I fixed mine a couple years ago.
I'll try to explain it.
With the motor in the stowed position and the bend facing down, I made basically a "C" out of 3- 2x4s. The "c" was rotated 90 degrees clockwise so you have the end of the bottom of the C on the motor and the end of the top of the C just under the head (the other end of the shaft)
With me?
On the end that was on the motor I added a 8 in pc. to even out the pressure on the motor-basically a"T". on the other end I cut a "V" to help the 2x4 stay on the shaft.
I have a garage with an open ceiling so I raised the bow until the hozontal part of the "C" was against a rafter and strapped a come-along around both, the rafter and the "C"
I put a strap around the sharpest part of the bend and hooked the come-along to it.
Crank away until it's staight, I found I had to go a little past strajght because it bows back a little.
Hope that helps, if not and you get around Dade County-pm me.