I posted some of the source code back here, might help:
Maybe you can add a screenshot? It’s been a loooong time 
Edit: Here’s a super stripped down version of the Smart Geometry 2016 pipeline (i.e. just the shaping):
201210_FAHS_InteractiveModellingPipeline_Minimal_00.gh (45.7 KB)
The code here was updated in 2020 to run in Rhino 6/7. But haven’t tested with 8. Also it’s ten year old code so there are surely many things I’d do differently today. Notably regarding drawing and dynamic/event-based stuff.
Edit II: Just tried running the definition in Rhino 8 and I’m getting a goal casting error. It does ring a bell, but afraid I can’t recall how to solve it. Thought it might be that I’m referencing the wrong Kangaroo2 assembly, but that doesn’t seem to be it. @DanielPiker might know why it broke?
