Thanks for the kind words, we're really pleased to hear that you're finding RailClone useful for your work. If you're ever able to share screenshots or information that we could use for promotional material or a case study please feel free to drop us an email on firstname.lastname@example.org.
Regarding your questions, please see the attached file. The issue here is that Adaptive mode doesn't allow the Y Evenly segments to be bevelled at the corners. To solve this I've split the style across two generators. One of them is set to Adaptive mode and adds all the building components except for the Top, Y Evenly and Bottom. It uses adaptive mode as per the original style. To create the gaps the size of the original horizontal components is wired to the Fixed Size input of an empty Segment node.
The macro is then cloned and switched to Scale mode to add the remaining pieces. Bevel mode is set to Reset for the corners.
I hope that helps, please let me know if you have any further questions.
All the best,