I bought my Aurora 9 two years ago and I fly 10 planes with it, using Optima 6's, 7's and 9's which I've purchased within the last 18 months. I've had no problems whatsoever that I know of ... knock on wood.
The HPP-22 is in the receivers? Since I've purchased my Optima recvrs within the last 18 months .... do I have the latest and greatest?
Thanks
-oD