I have a brand new P160RXi. I ran it once for about 5 min. as a test, but since that time I have not gotten a successful start! When I initiate the start sequence I hear the starter motor "bump", then I see the preheat message on the GSU. The preheat message lasts for about 4 or 5 seconds and a number value starts to increase on the screen above the word "preheat", then the start sequence is interrupted and the word "overcurrent" appears. I exchanged the 3 cell LiFe battery supplied with the engine for a 2 cell LiPo but there was no change. The same fault occurs every time.