Hello, I'd like to know if there is anyone out there who knows how to stop servo interference? I have a JR XP642 with brandnew JR flightpack with 537s in my hawk and never had a problem for 4 yrs until now. As soon as I turn the Rx on all of the servos start moving uncontrollably and intermitting. I also have a nexus with Jr 517s and 1 hitec 605 on the rudder that does the same thing when I turn the Rx on. I know about pcm and fm but I've never had any interference ever before but now all of the sudden.