So I've been wondering for a while now why my left hand and right hand doors were always leaving a different reveal at the top. And I finally found the problem today as I was mortising out some hand pulls for pocket doors. The center of the collet is not centered on the collar. And yes I tried different collars and different bits. I guess I'm sending it in for service. Anyone else ever had this problem? Not only that, but I'm going to have to send in my kapex for the second time for the exact same issue as before (leaking grease out of the head and it won't move up on it's own). Frustrating.