Man, this took me way more time than it should, 1 full day trying and failing, just because I missed a single line in the .json… 
Anyway, I finally got the smooth diagonal rail working! (Don’t worry about the little voxel sticking out at the end of each piece, it was just a marker to get the correct angle)
I’m going to update the mod later. Anything else that I should know?(Bugs, etc…)
I already noticed 1 missing text at the ramps, it will be fixed with the update.