New running board motor, mechanic having problems

[Air00Max]

I purchased a new running board motor. The mechanic I took it to is having trouble getting the old shaft off the board (long metal piece in pic). Ford won't install it because I didn't buy the part from them. Any tricks to getting this out ? Tired of waiting on my mechanic to come up with something.

 

[stamp11127]

Post a few pics of the original mounted to the running board. If there aren't any flat spots on the shaft I would expect a press fit or a drill and pin once they are in place.