OK...got it...death to the brake/LDC.Drill the set screw out. Even if you have to put a divot in the barrel, drill that misribably stripped b-tart out with a 1/8" drill.Clamp the loose barrel into a padded vice. A v-blocks of brass would be great...but like most of you, you "ain't got that". Probably have or can make wood vice jaw blocks.Clamp the "carp" out of the barrel about mid-point in the vice (with wood blocks..brass faces...or even a couple of pads of old dress-shew sole). (With the screw drilled out) heat the brake (no so much the barrel) until it slightly smokes (not hot enough to burn the blue, but hot enough to let whatever is used as adheasive smoke/soften. You will melt the crappy little soda-straw baffle system inside the brake.Grab onto the brake (that you don't intend to save in pristine condition) with vice grips. channel locks, ore ven a Silson/pipe wrench and twist-n-pull. The reminanats of the set screww may cut a zig-zag scrach on the barrel shank, bit if it moves at all, you'll eventually get it off.