Soooo... 8 flights later ( 4 hover and 4 loops loops flips and just hard flying). No problems. I think the onboard BEC on the Thunderbird 54 could have been the problem. Am going to attach the new 10a BEC with it and see if it can keep it up in the air. If it does then I can honestly say that the thunderbird 54 was the problem and have CC replace it. Either way...Problem solved. The Phoenix 45 and 10a BEC flying full out at 3080rpm after 4 flights in a row of flips and loops... The warmest item on the thing is the battery @ 89°F