Anyone ever use a solid rear rotor made by RPM(rapid precision machine) in MA.? They are supposed to be exactly like the Fredette rotor. If you watch eBay you might have seen a few on there for sale lately. I'm used to using oem Yamaha pads on my KDX but RPM says to use EBC X series...no metallic. The oem Yamahas are metallic of course. I've heard bad things about wear with the EBS pads. What would it do if I used these metallic pads with these rotors? They are closing these rotors out at $35-40! The price is definately right! Any comments appreciated from someone with experience with these RPM rotors. Thanks!