[rtcassel]

Perhaps the mechanical aspects of the new braking system are so much better than what you had on there before: magnets, wire connections, springs, shoe linings, pristine hubs, etc. Maybe the old parts' deficiencies were masked by the use of boost. I recommend trying it without boost. I did not understand why boost would contribute to hot hubs, but the tech person I talked to at Tekonsha did not seem to want to talk about it. She just said that if it makes the hubs hot, then do not use boost.