If it is on the point end, pressing too hard or inconsistent, while cutting the arrow on the cut-off saw, could give you a bad cut. This is, however, usually seen by the point insert not being flush with the cut around the circumference of the shaft.
Len, may be a dumb question, but does it really matter if the cut off is not perfect and does not exactly flush with the point insert. Wouldn' t the straightness of the insert along with a uniform inner diameter pick up the slack for a " bad cut" . Just wondering.