ORIGINAL: XJet
If you're really stuck then drop me a line. I've got over 30 years in analog and digital electronics and have been working on RC gear since the early 1970's -- just a couple of months ago I offered to act as an NZ service facility for Hitec here -- they never responded to that offer :-(
Xjet, I think I would like you to have a look rather than Hitec. They didnt find anything before so may not find anything this time. As I said above I will be trying a new module first.
You can email me direct at mossie@inet_co_nz and we can swap some contact details.
Cheers