Well, read all the responses so far. The only thing I have changed so far is the Y connector. Also, it's an Airtronics RDS 8000 with 8 channel 92824 receiver. Futaba servos. Battery is at 5.2 volts, 5.04 volts under load with tester. I guess all of this is irrelevant because here is what I just tried: different receiver (same model), everything worked fine. Plugged the original receiver back in and now everything works fine. So either the switch lead to the receiver, or the aileron extension that was plugged into the receiver was maybe loose? That is the only two items I unplugged and then plugged back in to the original receiver.
Weird, but maybe unplugging and reinstalling was all that it needed. New one on me. Guess I'll find out tomorrow when I take it up. [X(]

Thanks for all the help.

I'll let you know if it does it again. Hopefully it doesn't.