RE: 85cc Tecumseh, conversion?
No, sorry but I don't have any experience using Gas/Glow with the Tillotson carbs. The only thing you could do is try and see if the carb works without developing problems due to the Gas/Glow fuel. If I had to guess, I would say that it would work, but only trying will tell for sure. On all of my engines, including regular gas/ignition system engines, I have gone to using a "storage fuel" after flying to help the carb diaphragms live longer with the additives found in many of todays gasolines. There is a thread here in engine conversions about that deal.
Good luck,
AV8TOR