Fabman said:Regarding warpage, I had a discussion with the engineer at HAWK a while back and he told me when switching between street and track pad compounds to stick with the same brand. He said that different manufacturers use different bonding agents and some of them don't like eachother. It can lead to warpage, cracking and hard spots in the rotors.
If you switch brands, take light sandpaper and scuff off all the old deposits before installing new pads. I can't verify that this is 100% true, but it sure made sense to me.
I've heard the same.