Ok,
New longer top nuts sourced from "the Bonneville shop", usual generic parts re-seller.
Smeared in anti-sieze, and installed. I feel better now that there are more than 3 threads in the stantion.
I thought about making my own. Material would cost me 7 dollars an inch, I would want 5 inches to be comfortable.
The nuts cost me 35.00, I literally cannot make these for less money than I can buy them.
But that's the power of bulk metal buying and CNC.
Lee