Hot Wheels Ultimate Garage Replacement Ramp

One of the yellow ramps for our Hot Wheels Ultimate Garage fell out and was lost. Without it, the cars don't go all the way to the bottom. I couldn't find any existing designs, so I designed a new one from scratch. It's a bit crude, but it does the job. There's no hinge like the original, but it can be easily removed and replaced. If it gets lost, it's easy enough to print a new one.
I couldn't easily use my caliper to measure the remaining one and I didn't want to remove it because I don't think it would go back in, so this one was designed iteratively, mostly by eye, using Tinkercad.
Feel free to point out any existing designs I may have missed in the comments.