So I'm getting ready to install these sliders. I actually have the correct offset 12mm box end wrench for removing the brake line bolt between the fuel tank and the frame, but as luck would have it, someone before me has that bolt completely rounded off. I tried to be very gentle but I just cant get a good grab on the head. Any suggestions? I know there's a variety of extractors out there but as you all know there's really no room for a socket or anything like that in there.