"When you changed receivers, did you use the same crystal?"
New receiver, new crystal

"Is there any range increase when using a conventional 4 or 5 cell Rx pack?"
No

"Has the ECU ever been in a crash?"
No

"Is the ECU wire to the RX damaged at all or have any sharp bend in it that could cause a flaky connection?"
No, but I'll replace to verify.

"Has the ECU or the RX plug ever been soaked due to a Kero leak?"
No

"What software version are you using running on the GDT and ECU? (they should appear in the startup screen)"
GDT 2.21 ECU 2.32

"What is the serial number of the motor and when did you purchaser it?"
254660149. Purchased a little over a year ago.

Thanks for trying!