There's a collision issue. It makes contact with other passenger cars just fine, but when it touches tenders, especially the K4's, it partially phases through. Seeing as how Steam doesn't exactly like pictures, I'll create a video and send it here. Gotta be honest, however, your work is phenomenal! Easily the best I've seen on the Workshop.

Edit: Here's the video: https://youtu.be/hIzX_MGzCVw

Waaaaaaaaaaaaaaaaait a minute: https://youtu.be/VKUiVKBczIY

I'm aware of this issue and I've already made a fix for it. My main issue right now is that Steam sometimes doesn't receive the update to the workshop item even though it'll say it was updated. I'm going to try and get the fix out in the next couple days.

引用自 Railman1225：

There's a collision issue. It makes contact with other passenger cars just fine, but when it touches tenders, especially the K4's, it partially phases through. Seeing as how Steam doesn't exactly like pictures, I'll create a video and send it here. Gotta be honest, however, your work is phenomenal! Easily the best I've seen on the Workshop.

Edit: Here's the video: https://youtu.be/hIzX_MGzCVw

I just sent out an update for the K4, I hope it works for you since it's fixed on my end. If not it must be a steam issue.

it causes my game to freeze for so long I have to worry about whether I saved or not whenever I pick it up. But that could just be my specs.