I am looking for a source to purchase an 80 Amp mini breaker, to replace the 50A breaker that feeds my 5th wheel Lippert landing-gear motor. Ideally it would be of the same dimension (pins spacing = 3/4 inch) as the original 50A breaker. I've found several websites that have up to 50 Amp mini breakers, but nothing above that rating. Do I need to modify the mounting for a different physically-sized 80A breaker?