[GreenKeys] 14 punch bias?

[John W9DDD]

I seem to be closing in on this one, but the #5 punch is shall we say a little aggressive.  This is a chadless punch, but I'm getting chads at times from #5 punch pin and it ends up at times having that edge of the tape splitting off.  Any adjustments I've identified would seem to affect all 5 pins. 

Hints gratefully accepted.  

Oh I almost forgot, perhaps the old semi brittle tape contributes to the problem?

John, W9DDD