Scott,

Just for future reference: I tried everything you mentioned including giving up & calling tech support. We went over a bunch of S/W stuff but no luck. For a lark we tried one last thing, wiggled the throttle trim lever - problem solved - flaky throttle pot! I haven't decided to send the Tx back or not yet but they gave me that option. It works almost all the time now.

Thanks again for all the good stuff here - especially the TRex fixes - flies (OK hovers - I don't fly YET) almost like my EXI 450 now! I hope to learn a lot this winter.

Chuck