I'm riding a 98 EX500. Recently decided to switch front brake pads because braking seemed to be weaker, found that the pads were worn all the way down. Probably as a result, the rotor was ridged up and I replaced it with another used one that was smoother and a little thicker.. Finding a lot of friction when trying to spin the front wheel I took apart the caliper and cleaned and lubricated and put it back on. Since then I still have friction, though it's been reduced since the short test ride. The used rotor cud be a little warped though I dont know if that could cause this. Anyone know what I can do or check or replace to fix it? Should I try putting some mileage on it kind of like a "walk it off"?