the whole warped disk thing is a myth..doesn't happen..its probably uneven ware on the disk or pad or a slight bump..disks do wear down of course but they dont warp..would take crazy temperatures to warp a disk
have the 4 pots alright, steve sorry cant PM, 087 754 6113 if you need me. Got a quote of 580 for 4 new grooved disc with fast road pads. i might just blast n' prime the calipers and re paint