When you charge a Lipo with the charger in storage mode it only takes it to approx 60% capacity. To test the capacity as you are doing balance charge each pack at 1C, the end voltage should be 8.4V and then discharge. If you have been doing that and those are the capacity readings you are getting then I would say that those cells don't look too healthy.
With Lipo's there isn't much capacity left once the individual cell voltage drops to 3V.
To get a better understanding of the type of test your trying to do have a read of the bigsquidrc Lipo shootout 4 article here;
http://www.bigsquidrc.com/lipo-batte...0-mah-edition/
The capacity of your cells should be a lot closer to the amount they are rated at.