Well I got to take my car out for it's first race day and I must say with only 1 day on it I was not to far off my lap times with my Awesomatix. Had several hard hits and didn't break anything...so at a very least it's durable. One issue that I was having most of the day was that the car wanted to traction roll. I tried several things setup wise but nothing seemed to solve the problem. I had my tires glued to 59mm with several layers so I don't think that was it. I would like to raise the diff in the rear but not sure what you guys are using to do this? Can this be done with the 3D printed diffs, the eccentric doesn't look like it will work if you rotate it to the high position?