Yeah... I used to deadshort my RC2000 when they were stored for more than a week but from what I've read GP3300's are much more touchy about dead shorting than the Ni-cd packs of yesteryear. I do NOT plan to ever deadshort them.
Deadshorting did work well with the RC2000's though... when done properly.
Do the the pro's around here put a small charge back into there GP3300's for long term storage?