Travel Trailer brakes seem weak

Thanks everyone for the information. From what most are saying is that the brakes need more adjustment. I did pay the dealership to inspect/repack the bearings/brakes and they did a minor brake repair so when things warm up here that is where I will take it back to have them inspect their work. Hopefully I can watch them while they do it this time and gain some more experience with this set up. I want to eventually be able to service my own axles like many of you do so I can have peace of mind when travelling if problems arise.