Is anyone out there running on a Air. M11x? If so, is the 4th channel 3 position or just 2, and where is the switch/button or is it assignable. And does it also have EPA. Have the cash to get a new radio and want 4ch.s but not sure which one. It is up b/w this and the 4PK. Need to get some real run experience instead of some "tech" from "whereeveristan" that doesn't know what 3 pos. means. That's what I got from the Futaba guys, they told me you couldn't do dig or r. steer off of the 4PK, which obviously I found out that you can. This is not my favorite radio(4PK), but that mainly has to do w/ the looks, but I will put functionality over looks to get what I want.Thanks for any input guys!