[krausewich]

Rubber buffer or 'Rubber Prep' may do the trick. It's used before applying a tire patch on the inside of a tire. Strips release agents off. A local tire shop would likely give ya a hand. NOT sure how things react on racing tires though... I know you're not supposed to treat them with armoral, etc... so I'm not sure what the rule is on other chemicals too. Test patch the hidden side ; )

MK.