Odd:
My father loved them. He had 29,35,36x,40bb and a 59. Either ran good ole 5% Superfuel, Missle Mist, or his last favorite, Duke's Mixture. Never had any trouble out of his engines. I've flown Fox, K&B Torpedo and McCoys (yes the infamous 'Red Head 35).
Never had trouble with any of them and we flew the hell out of them almost every Sunday.
Later:
littlefly