What is a base ring?Apparently I didn't get a base ring with mine.
I've put a little thin o-ring under some of my attys. Actually, I haven't used the little thin o-rings on the P67 because I only used them to adjust where the air holes fall. I can adjust that with the adjustable 510.
Is it a big gap, Jim? Can you live with it? What do you think of the P67 otherwise?