Looking for input on trailer brakes. We have a 4 place Renegade enclosed trailer that has the 7" electric brakes on both axles. Has anyone but me had good luck with these? Every year they need to be rebuilt and half the time the don't work. Who has the 10" electric brakes and have you had good luck with them? Thinking of replacing the axles with 10" brakes and before we spend the money, I would like opinions on the 10" brakes.