ok the build video to the hellcat was the worse sorry guys been a fan for almost 10 years have built and flown several ,but so much was missing .I need help as where i am supposed to put the battery it does not seem to have any room after i add the servos and receiver. I have watched the video several times and it does not show battery placement. I order the whole kit with he 850 battery but for the life of me I'm missing something any help would be appreciated.I have over 8 flight test planes and this was the hardest so for