Wow, this is amazing. super detailed. It was so much fun and I’m happy with the results. - I struggled with the “copper” rear springs. I mutilated 6sets before I re-oriented them on their ends (vertically). Then I was able to pull the supports out of the center without damaging the spring. - Tires printed with Bambu TPU95A HF. the pre-set TPU in Bambu Slicer printed poorly and kept causing a bubbly top layer. I increased the “Top Shell Layers to 8” and I got good results on my X1C. I only printed ONE tire per plate. - suggestion for the designer. On page 28 of the instructions, please don’t use 10mm screws, they are too long. It breaks the little “copper colored” end-pieces. I used a 5mm screw and it worked much better. I am attaching a photo of page 28 with the 5mm screw changes! Thanks for the amazing design and super fun build! I hope you make more cool stuff to assemble like this!