Quote Originally Posted by IowaTom View Post
UPDATE: The 25/64 bit worked perfectly and a bottoming tap gave me lots of threads. My Proform H.B. Installation Tool #66515 broke while pressing on the balancer, leaving the tip inside my crank. I can't win.
Sorry for your continuing problems with this! Curious, did you have the the outer sleeve portion tight against the end of the crank before turning the large hollow nut that pushes the balancer into place?