I am glad to see that you cope with the joins
And here is a post in the blog with information about the new library that I created for Millhouse turntables: Millhouse River Studio O-gauge Turntables in SCARM.
If one wants to use these turntables in SCARM, just download the library from the blog and try it. If everything is OK, I will include the lib in the next version of SCARM
Mixy