I had wanted to try the vision props on my FC40 and know its suggested the gains may need to be adjusted. But I cant seem to find any thing other them "people saying to adjusting the gains" with out any elaboration on it. Which gains? and Do you increase them? decrease them or what? Ive also seen others say they didnt need to adjust theres and it flew fine. tho that dont seem to be the case in my case. Not only can i not take off at all with the stock default gain settings I tried to adjust them down some. But no matter were I have them if I try to do a hand launch not only does my fc40 not want to hover right it also lists heavy to one side. Which Really seems weird its like one side is getting much more lift then the other. or like its got a bunch of weight on its right side even tho it don't.