I am curious just where the failures occurred when you used a heavy
press in.
Would it help if you made the hole for a heavy press fit at the bottom
of the hole and a lighter press fit toward the top of the hole.

Or how about grinding a very shallow groove about half a inch from the
end of the pin. Medium press fit with the groove inside the crs. Then
use a knurling tool with smooth knurls to press the crs into the
shallow groove.


Dan