I am new to this forum so I hope I am posting this In the right place. I purchased a bulgarian ak74 FSB and bulgarian ak74 muzzle brake. The problem is I can't get the brake to screw on all the way. It only goes on less then half way then stops. The threads are in good shape on both parts. I have soaked both in PB blaster and cleaned with a wire brush. It still won't go on. Are these brakes just supposed to be on supper tight or is there something I am missing? I don't want to torque down on it too hard. Both parts are taken from a parts kit and are from the same type of rifle.