Ahhh, that must be the issue. I was a little confused in reading the difference between the two, so I opted for version 0.2.0.0 which stated the waterfall support. I will try the updated TSCo for Frameworks. Thanks for the response.
**Edit: Upon further investigation, I thought I had downloaded just the waterfall version, but it was indeed the 0.2.0.0 Frameworks version downloaded from here: https://github.com/net-lisias-ksp/TweakScaleCompanion_Frameworks/releases/tag/PRERELEASE%2F0.2.0.0
So not sure what the issue may be.