Comp cam warranty

One of my regular customers, who uses quite a few SFT cams was checking for lifter rotation on a 505 he’s putting together.
One lifter wasn’t turning at all.
Swapped lifters with one that was turning, no difference.
So...... it’s either the cam or the block.
Pulled the cam out, measured the lobe taper...... same as the others.
The choices at that point are....... bush the block, or roller cam.

Had it not been checked for lifter rotation...... it would have failed.

I usually check for lifter rotation very early in the cam installation process........ but I check the lobe taper before even sliding the cam into the block.