I have the little metal thing that gets inserted to release the brakes when the trailer is not connected to the 6 pin connector. In my case anyway, the 6 pin signals the brakes not to actuate when in reverse. I did have the release in the hitch when checking the spin on the brakes. I’m sure the metal insert will be handy when trying to push the boat around in the garage without the truck hooked up.
After Iowaboy’s comments, I think what heat I’m experiencing is normal. The hubs are fully packed with grease, the bearing buddy’s are not overfull, and the brake pads are riding ever so slightly off the rotor. Time to go fishing and tubing.
Thanks everyone.