I was deeply involved with flying R/C aircraft many years ago and am wondering if there's anyone out there who has successfully converted the old Kraft radios to the new frequencies. I have two Kraft (5-ch Sport Series, and 7-ch plug-in module open gimble) radios and a Futaba 7ch. I'm tinkering with the idea of getting back into the hobby and seeking to find a way to use them again. Any ideas? Any parts sources?