I was thinking the same thing that the rigging
holds it on. I will still through-bolt it when I re-install it, but wont cinch it down to the point that it deforms the mast. The seat in the mast also holds it in place preventing any lateral movement, so I dont think the compression
tube is necessary for that reason either.
There is some sort of black paint
that was used on it in the past which you can see in the pictures, but I can pick it off with my fingernail. Is there a recommended coating for it once scraped clean or should I leave it as is?