How do I install a new incline motor in my Reebok 8000ES treadmill?

I had to purchase a new incline motor because my treadmill was stuck at maximum incline. I had no problem taking the old one out, but now I have a problem with installing the new one. I can attach the bolt in the top part of the incline motor to the treadmill base but then the bottom part extends beyond the holes where its bolt must attach. How can I get them to line up perfectly in order to get the bolts through both ends?

Reebok 8000ES treadmill
Model #RBTL699082

Jennifer
December 2010