Does anybody know of any good front brake upgrades for the K75? Stainless lines are a given, but what about tricks such as using K1100 4-piston calipers with the K75 disc, for example? The K75 rotor is not floating like the K1100 rotors, so would that comprimise caliper efficiency? I'm a bit ignorant to braking engineering and dynamics . How about using the K1100 rotors and calipers? Any relatively cheap (not $300 per rotor) upgrades out there?