I've got Homeline bkr box, approximately 18 years old, when house was built. I've noticed the bkrs do not "seat" as they should--whether it is a single 20 amp or 30, 40 or 50. No matter how hard I push or take out and reinstall, they will not seat.
What could be causing these bkrs to do this? If they are the incorrect bkrs, how do I know which bkrs to buy for correct replacement.