Thanks for sharing your work Team! You have good progress over the years.
I have these questions:
Why did you have a weight problem with one of the robots? what made it exceed the weight? Did you noticed a big difference in using AAA batteries at the same time?
How many designs did you try in order to reach the current one you have?
Also thank you for taking referees into consideration, we appreciate it, some of my friends still have scars from some of the sharper edges and corners on robots.