DX5e - I too have had problems with the tx batteries losing contact whilst operating the unit - then application of failsafe and (after joggling the batteries) a lengthy re-boot/re-connect before control is re-asserted. I'm using it for a model boat and zero throttle equates to full speed astern - not very nice either! No matter what position I put the throttle stick in during the bind procedure (ideally I'd like it at mid position 1.5mSec - for my boat), the throttle channel always sets itself to (a measured) 0.91mSec ie low throttle (or full throttle if you've set up your ESC/motor incorrectly!) Can anyone else confirm this is 'normal' - the DX5e manual seems to *suggest* the throttle will failsafe to the position it was set during binding, though they instruct you to put it fully down (zero throttle for aircraft) in the procedure.
By the way, I'm into electric flight as well - but indoor free-flight and am developing a timer/flight profiler that may be of interest to you guys
YouTube - Revised Electronic Free Flight Timer [Bench Trial]