XT Parallel push V brakes squeal
I am fixing up a cannondale F400 with some XT parallel push v brakes and Bontrager select rims. With the XT brake pads, the front brakes squeal extremely loud and constant under any lever pressure. This is ear shattering fog horn sounding squealing. I tried toe in, toe out, and flat pads with zero change in the squeal. I thoroughly cleaned the rims with rubbing alcohol. Then I tried some brand new dual compound Kool stop pads, toe in, toe out, and flat. Zero change. I even tried with a different wheel to make sure the rim wasnt the problem. Nothing.
Is there something special that needs to be done for adjustment with the parallel push brakes? I've exhausted all of my ideas short of putting on another brake (although all I have is parallel push XTR's, probably not much change there). Any ideas?
Thanks in advance