Did Weatherby put the accubrake on the rifle? You mention that you've owned the rifle for 6 months, but don't mention whether you bought it new or used. If Weatherby did the work, definitely send it back after deer season. If Weatherby didn't do the work, what are the chances that the brake is good, but the rifle threading is off just enough not to fit perfectly. I've seen projects coupled together and made to work even though the threading wasn't exact, but the brake on a rifle wouldn't be one of them. Just throwing out a late possibility. Have a good hunting season.