I have a duo rx where the controller port is finicky (ie: I need to put a small amount of downward pressure on it for it to work). Does anyone have any experience with this issue and a possible fix? I'm not exactly sure what the problem is, but it might be re-soldering the controller port inside? I've also recently purchased a new controller to rule out the actual controller that came with it. Still waiting on this new controller. Any advice would be appreciated! Thanks!