My GPZ900 front brakes have been pretty terrible from day 1, however the warp-induced shudder got so bad that when the rego lapsed in March I didn't bother to renew it. I just fitted some new disks and pads (0), then removed and cleaned the carbies. I also removed the in-line fuel filter that I suspected was causing the fuel starvation issues when the bike was leaned over for more than 10 seconds (such as you might encounter while riding with a crosswind). It's made quite a difference, although now I can notice the adequate- though-not-terribly-impressive nature of the single pot brake calipers. Still, I don't hate the bike so much now. Which is just as well, because a new one is at least a year away. BTH