Gary,
Hmmm
The one thing I forgot to include in the print is what color the low, high, and ground wires out of the motor are.
Maybe you have the polarity of the motor backwards, causing it to park to the left. (run backwards) I'm not sure. I'll have to look in my notes.
Could you post a picture of your motor? It sounds like someone removed the park switch assembly and tried to wire it directly to the switch.
Steve