Received the following from Jack Sallade...
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If you own a JR X9303 2.4GHz Transmitter, you should check this bulletin immediately:
http://www.jrradios.com/Articles/Article.aspx?ArticleID=1822 There is a known issue with chafing wires on the Aileron (mode 2) in these radios.
Check it now and save yourself an airplane!
Please pass this on.
Jack Sallade
VP, IndyRC Modelers
P.S. Just finished applying this to mine and I can see the very slight chafing of one of the wires (blue in my case). Hadn't even gotten through the insulation yet, but I have very few flights on mine.