Looking at the diagram that Rod provided there appears to be three spacers. There is one under the fan and another under the bearing retainer, then there is one at the bottom of the lower housing. I only have two spacers. I have tried to put one at the bottom and the other under the fan. It binded. Then I tried to put one under the fan and behind the retainer and it binded. I am at a standstill right now. I am going to try and get a third spacer. I remember taking a spacer with all the other stuff to get chromed. I think it got misplaced. Will post my results when I get the third spacer.