I just picked up a couple more powered gliders of the same design as my "Vulcan." The new version, called the "B-4", has the same airframe and appears to have the same motors, but the radio has a range of only about 100' (450' claimed) and is 45mhz, so I can't use the better transmitters from the older version I have. So, is there an aftermarket receiver that's inexpensive, will power twin 180 motors instead of servos, and runs in the usual 27mhz channel range?