I pulled some tires off of an early 80's wheelset (Campy Super Record hubs to MA-40s) and came upon something I have never seen or heard of: a strip of adhesive-backed yellow felt-like material stuck to the inside of the tir e. Is this just a predecessor of "Mr. Tuffy"? Designed for puncture resis tance? Or does it serve another purpose? Is/was this a common practice? Matthew BowneLearnin' somethin' new every day inBrooklyn, New York