Are the stock DRZ SM front rotors any good? The genious owner who had my wheels before me tried to weld the floating rotor together. They still stop pretty well (way better then an S) but its scarey knowing that its been welded. My buddy has a SM with a braking wave rotor, and I can't tell too much of a difference. I would like to buy a stock rotor, preferably used, but I want to make sure they work well and last a while (not sure why the guy tried to weld it). I am hard on my brakes, riding endos and all that, and I just want something that will last quite a while. If anyone has a used SM front rotor, shoot me a PM. Thanks!