Breather blow by

Getting around to doing this today. Breather on valve cover is completely stuck, won't turn at all for whatever reason. Tried everything from using an oil filter wrench, a couple love taps from a hammer to try to loosen it, etc. Should I just knock the damn thing off with a hammer at this point? Obviously don't want to damage the valve cover but seems like the breather would give way well before doing any damage to the cover.