My name is Austin, my boys and I have been having a lot of fun watching the race video. I recently finished printing and putting our track together. I'm still working on an arduino starter and timer, but new to it so its taking awhile. I also designed and printed some clips for the mag bars to help them stay together at junctions to the slopes and turns. Let me know if you want the files and I'll email them. I tried to make the frame modular so it can stack and fold away so mama doesn't get mad about using her room. Thanks for sharing all the other pieces 3D.