Welcome and thanks for making the post. You did a good job on those. I like the single mount bolt.
We have had a few of our members do similar things.
I never understood why Kawasaki didn't make them. The original grab bars, from 2011-2013 have the same base shape. The original bars we had were used on the Kawasaki er6, from 2008-ish.
If we had a way to fasten them, this cover would work. It's the same shape. They could have made them without "650r" being there