Test the range with the ECU battery plugged in and then again with the battery unplugged. You want about 10% range reduction at most.
Also, check that the black data cables are as short as possible. I shorten mine I have the special crimping tool, DO NOT try to buy phone cable from Radio Shack, you will damage the ECU.
Email me if you still have problems. How close are you to flying?
Good luck
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