Thanks Jackson. Yeah, I was a little concerned about the battery weight, but it seems to be doing OK so far. Did a full flight test on one of them today and it was a little over 13 minutes. The Syma was fighting about a 15 mph wind with some heavy gusts. And it was cold! But if one or more of the motors goes bad, I'll just pull the flight board out and put it in the new crash kit body and install the new motors in that. Build up a new one. It'll be good practice for me. And give me something to do.