"J"..... Brakes on a boat trailer are always a PIA... Just be thankful your not using your trailer in salt water. Bearing's are always an issue. Usually I'll pack my own bearings but one year I had a trailer place do them. Couple months later I was towing the boat down the shore in the pouring rain and when arriving I stopped at a gas station to fuel up the boat. I look down and "OH SHIT". I'm missing a wheel !!!! Never felt or heard it snap off, only thing left was the spindle..