Thats nuts! Thanks for sharing the footage.
You should really be using a separate BEC. With having the extra two servo's on that E-Flite 25A, according to the manual, you are pushing the limits well beyond what it's capable of. I'm not sure I would mention that to Parkzone.
http://www.e-fliterc.com/ProdInfo/Fi...025_manual.pdf
I went ahead and ordered a ParkBEC from Dimension Engineering just to be safe. Best of luck.
Cheers,
Keith