Thanks for the response. I really appreciate the time and effort folks like yourself put into your work and sharing it on the marketplace.
Edit: I just started from scratch again, just to double check each step and I think I found out what was happening. It’s entirely a mistake on my part. Pretty sure it was all along.
I didn’t name the bone on the new item I was importing Root. That was one thing I overlooked and the only thing I changed and got, finally, a solid non-flickering item. I didn’t want to write up on the answer hub without being sure so I’m glad I went back and checked and found this oversight. I can’t speak to anyone else having this issue, but I’m happy to say it was all my fault and not the Blueprints or the engine or anyone else’s.