Thanks for the swift replies!
We added about 100 pounds of bricks to the robot, which helped, but did not alleviate the problem altogether.
i'll try to get a video up so you can see for yourself how bouncy it is.
Rosiebotboss, do you think/know if the new 6" am which have a smoother shape solve this problem?
from my geometry class I seem to remember that the intersection between the relevant shapes in this design should be an ellipsoid but I'm probably mistaken because it doesn't seem like someone could patent an ellipsoid
-Leav