Just make sure you range check it like always with engine off and then on. You should see maybe a little difference between engine off and on distances but nothing drastic . If your on 2.4 I would say your okay and if on 72 band I would say as long as the batts are on one side and the ignition is on the other should be okay . I solved some balance issues by going to A123 up front 2300 mah . I can fly about 8-9 flights but in reality 8 is my cutoff. yes it's a bit heavier but according to one of the better pilots at my field he liked it as it was and he flew the piss outta it