I am currently buidling a bike and I've run into my first big snag.  I have a revtech 6 speed transmission and a BDL 3" open primary.  I tried putting the two together and they won't fit.  The inside dimension of the bearing is 24mm and the outside dimension of the transmission mainshaft is 25mm.  I see on the BDL website that it is a frequently asked question about them not fitting and appearantly the HD mainshaft is 24mm.  Anybody else run into this problem and what did you do?  I tried contacting BDL but surprise, surprise, no response.  

You could heat the bearing and the inner race will expand  enough to install it