To create a library, we always need the exact geometry of each track part, such as the exact angles and lengths of turnouts.
Usually, they can be found in the catalogues of the various vendors, but for Shinohara, it seems to be different.
So far, we've not been able to find the exact data.
In the meantime, we've had some information from one of our forum members

, but we're still investigating the correctness/accuracy of the data.
David.