Robert,
Thanks for the quick response, to be honest I do run a balancing charger and I do balance my charges almost every time. But recently I probably skipped balancing to every other charge since I do fly just about every weekend. Could this really make a difference ? My amperage draw on the big plane is usually around 4 flight total draw over 800 mah. This is what caused me to add another pack as like you said I was getting close to 1/2 my total capacity.

This has been an eye opener.

Thanks

Johnny Snead