Finally replaced the chassis. Was barley starting to crack in the corners. Been running it and racing it a couple times a week. Might have been cracked for awhile, could have kept running it. Didn't cut the new one down as far or enlarge the extra holes, feels allot heavier. Going to race it tomorrow and see how it is but might cut it a little more. Was already cutting the back for the long rear arms so figured I'd take some off the sides also. Built a Factory Team that I was planning on running but this car works way better.