As stated previously, try replacing the wheels (if you have spares) and add some frame work if possible. If it's not, try moving the wheels as close to the motor as possible (but, make sure it doesn't effect your programs too much, or you may need to reprogram- although it would be more consistent.) -- To UNSUBSCRIBE or CHANGE your settings, please visit https://listserv.jmu.edu/archives/vadcfll-l.html and select "Join or leave the list". -- VADCFLL administrative announcements are sent via VADCFLL-ANNOUNCEMENTS-L. Visit https://listserv.jmu.edu/archives/vadcfll-ANNOUNCEMENTS-l.html to subscribe.