I have had mine stick closed twice even though I used it daily. First time was on Emigrant pass East of Pendelton with my 4,500 lb camper on. Couldn't figure out why my EGT was pegging, and it was smoking badly. It got so hot the bolts on the manifold turned bronze colored.
The next time I stopped in the Cummin's NW shop in Eugene who disconnected it for me. I am still wondering if I should give up on exhaust brakes completely or not. The last two truck I have owned I had them installed the first thing since I tow a rather heavy fiver.
The first system was the "Decelerator" by US Gear installed at Camping World. I had nothing but on-going and expensive problems with it
Next was the BD system. Worked OK for nearly two years, but have had sticking problems with it two times now in the past year and a half. Maybe I should just expect to replace brakes more often and give up on exhaust brakes.
My BD system is still disconnected, and I will probably not reconnect it.
Dewdo in the other Washington