It was the 4s battery. I did not know about the BEC problem until a friend from florida who is also a regular at RCGrpups referred me to the thread about the new F-18 Exeed/Starmax/Riccs...who ever they are now. I know my Atlas 45 has an internal BEC that ran on 11.1V and I disable them to run on 4s. I just wasnt expecting the BEC to be incompatible with the 4s. My pink Vipers were StarMax. Anyways, I have borrowed one of my Castle 60 amp to run my now beat-up plane . With that 60 amp I have no problems, but I have since stopped flying it and waiting to see if John can mitigate. I have sent him a couple of e-mail already about the RMA but I still dont have it. Well, thanks for the instruction on how to get a hold of John. I think the RMA that he mentioned that was sent was not for my order, rather, it was for the gentlemen at the beginning of this thread. If you get a chance to see that video, feel free to take a look at my other FPV vids. I will be touring the Southeast soon to record aerial vids of Historical sites.