Yes, I run them hot off the charger. I have been reading up on these 1b4200 cells, and they sound really fragile. Sounds like you are only supposed to run them 1-2 times per day, and even then they are only good for a few races.
I got these so I wouldn't have any worries running in the snow for winter, but now I guess I should have got lipos. I have had really good luck with lipos in my 3d planes, and I run them as hard and often as I can.
Flightpower, here I come.