I recently installed a set of SRAM Rival brake calipers on my bike. All went well but unlike Force, Rival doesn't have the screw on the side to make side to side adjustments. So it is critical that centering be done via the brakes' mounting post. But that requires a 12mm wrench. As far as I can tell, Park, Pedro's nor Ice Toolz do not make 12mm wrenches and my craftman wrench is too wide. Is this a problem for any other Rival owners? I have a 13mm, should I just use that?