Not nearly as experienced as you guys, but when I was having problems with flairs after years of no problems it was my breaking pliers. I'll often use them to pull off strips. When I checked the edge of the jaws they were concave. New ones did the trick.
Just in case you're using breaker/grozers.
flairing problem
Moderator: Tony Smith
Re: flairing problem
My goal in life is to be the kind of person my dog thinks I am.