Are there any bird side boosters available for the P4 for range? I have the video booster from FPVLR but of course can't install it yet because they don't have instructions available. Even then I know it won't do anything for flight range. I fly in the trees so 3500-4000 feet is all the further I can get. I've tried boosted kits for the RC from FPVLR, REXAUV and DBS all with similar sub-par results so it seems to me that boosting the P4 is the next step. Oh, and I tried the wind surfers too. Great for the money but still only about 3200 feet for me. Just too many trees where I live.