After a road hazard had broken a spring, put a baseball sized dent in the tire rim, and damaged both axels. The Insurance company decided it would be cheaper to replace the entire undercarriage. A two and a half weeks wait and the new Lippert undercarriage was bolted to the frame and the TT was in my back yard.
Since then we have I have towed about 5000 miles but on our last trip in November I noticed a slight grabbing it the brakes. I had forgotten about it until we decided to do a Valentine's day trip.
As I mentioned starting cold there is no issues for the first 15 to 20 miles then the brake started to grab. If it is an adjustment issue I will do that when the weather warms a bit and I can pull the rim to pack the bearings.
I have a Tekonsha inertia type controller which I have used in my last two TV's. It is about 12 years old.