RE: Total lock out on JR12 2.4Ghz
Gun,
Not that it would help in the case of keeping the radio from locking out - but after you set up everything, did you re-bind the radio (the manual says your supposed to) with the failsafe points setup?
I ask as it sounds like your plane went into failsafe. Maybe - just to be sure, send your xmitter in to be checked. Tell them it went failsafe on you when you had 4 remotes and 2 batts and that the screen would do funny things.