Just a thought, but your problem might be with the Spectra 2.4Ghz module and not the receivers. Here's why:

I have only had my Aurora for 1 week now, so I do not have extensive experience with the Hitec kit. But this week has been very eventful and it might be of interest to you!!

The Tx came with an Optima 7 in the box and I also bought a new Optima 6 at the same time. I was finding that my Aurora was not linking prperly with both of the Rx's. They appeared to link OK initially, but then on subsequent switch-ons, I would only get them talking to each other about 60% of the time! On the 40% where the connection was poor I kept getting 'jittery' and 'wig-wagging' servos.

I took the unit and Rx's back to the shop and after phoning Hitec service department for advice, we swapped the Spectra 2.4Ghz module with a new one. It cured the problem and I now have a perfect link and rock solid connection each and every time.

Although I'm sure it could happen, I can't imagine there being a fault with so many receivers.


Hope this helps.