I just used them on a stock E-savage with deans. Man, money down the drain. I guess I go back to NIMH.
You can't run lipos past 3v per cell. To get more cycles most guys stop at 3.4/3.5v per cell, another rule of thumb is not to go past 80% capacity to get the most life out of a pack. If you are using them on a ESC without a lipo setting you need to run a seperate LVC. You can get a LVC, liposaver, for $20 to run inline with you ESC. You say you know how to treat lipoly packs, but did you consider you current draw?
Sorry to see you go back to NIMH, but as with anything new you can't just jump in, you need to research first. Before calling them crappy you should have contacted maxamps and perhaps they would've shown you some good will and offered a discount on another pack.
Now then you need to properly dispose of that pack. Completely drain the pack, puncture and soak in salt water then toss.
Perhaps Maxamps should have a mandatory page with lipoly precautions/instructions to access the lipo section or when the system detects a lipoly battery in the cart before final purchase. I know Apogee has a such a page, http://www.pfmdistribution.com/guidelines.htm