[blykins]

Rick,

Dan called me last night and we discussed this at length. We were able to take the necessary measurements over the phone and he basically has two options: 1. Modify the input shaft 2. Grab a spacer.

He is taking care of this now with the vender that he bought the parts from.

As for why it happens, I'm not really sure. I think sometimes there is just a stacking of tolerances. His particular package was put together correctly, with all the parts being the correct ones.