Ya, were stretching the envelope too. Enya .50 with 11-7 MA kinda heats-up the engine. Throttling down on final approach tends to kill the Enya. A few passes at altitude low speed helps it cool down somewhat. It stays running. Leo, I still can't figure yours out, really wish I could help. Sure wish mine would'nt float so easy/long. It's done for the season. MM