While we were on our way to our first competition this year, one of our mentors who had gone early to uncrate the robot decided to call and say that they had gotten the chance to go in and weigh the robot and we were 6 lbs. overweight!

After about ten minutes, he called back and said that he was just kidding and he just wanted us to come up with drastic weight loss ideas. Anybody have any ideas?
Here's a few basics:
SWISS CHEESE like crazy
smaller motors