A large crows foot will get them off.I have like 3 or 4 that I used at work for just that as different cars have different sizes.Some have a roll pin some have a flat that gets punched down to help lock them.I use loctight also.Just get the new one and go buy a crows foot or rent the tool from most big stores.Turn the wheel all the way out to the side you change makes it pretty easy.Rocky