I'm looking to upgrade the antenna's on the phantom 3a drone itself. The stock antenna's are just the little linear polarized ones built into the legs. I would ideally like to replace the stock antennas with something like Mad Mushrooms. Anybody done this kind of mod? How do you access & replace the stock antenna? What kinda adapters would I need? I've already done the FPVLR advanced upgrade. I would just like to mod the drone itself now. I think putting RHCP antenna's on the drone would work better with the RHCP FPVLR upgrade.