Evenin', Woods... it must be brake problem day Put new 4 piston caliper on Springer, started bleeding fine....then problems..then nothing. The geniuses who designed this 4 piston caliper need a beating. Two bleed valves on back of caliper, smallest that I've ever seen. Nipple is a 1/4" long, not much for bleed tube to hold on to and 1/4 " nut is even thinner, had to dig out my ignition wrenches to turn it. You have to work thru the spokes to get at it, too. After several hours of trying to bleed it every way possible, it appears that something in the master crapped out. Looks like I'll be rebuilding that tomorrow....aaaarrrrggghhhhh! ...OK rant over.`