I don't have a Break Buddy, Pro, or Master (I went with the Unified Gear "Decelerator" system)
But I can tell you of a problem... This is *NOT* your problem however
When the tecnichins installed the Decelerator they had to remove a plastic panel that covers the underside of the Dash (Totally unneeded piece of plastic near as I can tell) When they replaced it they put it in wrong
The result is that it fell down, caught the pedal when the Decelerator pulled it down all the way at hookup and caused the brakes to drag while I towed it
Thankfully the damage was minor... I've removed the panel and next time I visit the shop will be serving up a good size dish of deep fried technician.....
And the first time I get close to Unified Gear I'm going to have them review the instalation as well. Many nits, but that was the only major issue... NOTE: This is all to do with the instalation, nothing to do with the product... I am very happy with the product,
It works well... I have not been able to do the degree of testing I'd like to do, but I have confirmed it works as advertised
(To test it properly I need a driver in the rig and an observer in the towed, I need a closed track with both dirt and pavement, and we need radio communications... That last we have, but alas, I'd need to be the observer, and my wife won't drive
Hopefully I'll find a good closed track (Vacant mall parking lot perhaps) some day we can test in/on