how tight are you putting the belt. Hope not too tight.
I have been using a 4"10mm Inzer belt for squats and deads without issues. Recently as I have been going for max lifts with my squats I almost broke my rib. I wore it at the usual place. Tested it with lower weight and no issues. Tried it with a max lift once again it felt like I was going to break a rib. It must be a form issue. I have no video camera to show but could anyone venture a guess where my form is breaking down and causing this issue.
how tight are you putting the belt. Hope not too tight.
Do you happen to have an unusually short torso? Is it a lever belt?