I got it fixed. I took the engine out remounted it on a couple of poly strips I cut out of some scrap material. This keeps it off the aluminum mounts. Didn't work. Since this was an ARF (Pizzaz) it came with a wire for throttle control. Someone mentioned that if the carb arm was metal this could be a problem. I dismissed this cause it was flying good before (glitch free). Well I decided to try it and replaced with cable and nylon clevis. Problem gone, flew it yesterday.