Weak Brakes

I have a 2020 No Boundaries travel trailer with a Lippert torsion axle w/ 15" wheels. The brakes are pretty weak even with the camper empty. I've towed numerous campers so I understand how the brakes should feel. I have my controller maxed out and on max boost. I just gave a quick visual inspection and there are no obvious issues. How do I figure out what is going on? Some sort of voltage test?

I bought the camper used, so it's not a thing for the dealer.