Thanks for the answer. I'll switch back to a 2 cell lipoly. Actually, 2 and 2 switches probably.
FYI, Several of us watched my NMP pack fail after takeoff at the gardnerville contest. Battery voltage was 8.04 under load before takeoff. I was on my 1st pass back after takeoff when it failed. One cell reads 0 the other still good. So it does happen with li ion's. I have the pieces to prove it[]. I was pretty bummed as I have swore by these packs since they came out. I won't use them again unfortunately..

Thanks again for the answer. Sorry to hijack the thread!
Chris