So i had a good day shuttling DH runs the other day which involved going through some wet muddy puddles or what not with hot rotors which usually don't mesh well together. When i got home and was cleaning my rig the next day i found that my rear rotor was warped pretty bad. I know you can by the rotor truing tool or whatever its called but i don't think its worth the 20 or so bucks they want for it. Is there a way to unwarp them without buying the tool? I guess you could take it off the hub and bend it back by hand. But are there any tricks or methods you guys have found that work well for truing rotors? Thanks for any input. Cheers