I'm talking about the cam bearing feeds. I used carbine because they were available. I snapped the first one. Then I slowed down on the second and just dulled it and every other bit I tried just was useless.
You could just redrill the cam bearings themselves. But I do not know your entire plan.
Ideally I would try to have the set screws drilled in a lathe and to avoid breakfast nag bits you should have some pretty good rpm.
What size hole are we talking.