On the Z51 brakes do the calipers have two bleeder valves? Looks like one is on top and one is on bottom of caliper (the only nippily looking things with a rubber cap I could find). I need to flush brakes and put race fluid in and was going to do it this weekend but I am unfamiliar with the corvette and would really appreciate a little help. Read a lot about inside versus outside bleed valves but these brakes seem to be different.