Hi Pete,
Lovely model, i have been looking at the Hobby King version, where did you get this one from if you don't mind me asking ?
I use an orange 6 channel in my Easy glider and have 'lost comms' once with it, had to power off Tx and back on again to recover, luckily the aircraft was at height and thermalling so no damage.
Since sticking the aerial throught the fuselage i've had no probs since.