Hey guys. I have an SC Dual Axle Trailer. I had a new brake job 1 year ago. A few weeks later I brought it back to the service facility because the rims/tires were extremely hot after driving merely 30 miles. I brought it back, and he couldn't duplicate. 50% of the time my rims get full of black brake dust and are hot, the other 50% it's fine. Now on the left side, I can see grooves again. Thoughts?