Center Marks

if you dim from the center mark you usually get a nice gap between center
mark and dim witness line (preferred). if i dim from a center mark and the
hole position changes the dim does not follow the center mark. why do
center marks move with a hole, but not the dim?

 

that's good to hear. not updating seems to be a random occurrence for me.
if i discover that i'm picking the center mark in an obscure way, which in
turn causes the dim to loose it's ability to update, i'll post again.

kenneth b