Sometimes, when I place it, one of the connectors isn't valid and I have to erase that section and place it manually.
(In the picture, bottom left leading to right-side rising connection.)
I haven't figured out why it happens.

It's a littlebit steep for realism.

That single flaw aside, this is exactly what I needed. Thank you

Asthetically there is a major flaw. The bottom tracks run right into the pillars.

http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=444111634