Splinter, Ducky are the smooth cuts the burnt ones on the left? I guess if your going to paint them with latex or milk paint sanding isn’t required. Most of my work involves clear coats and some sanding. And there is a lot more sanding when the wood is burnt than just having saw marks.
It looks like the fes is out on a limb or a spring board. What’s the vibration travel up and down? You could attach a stick to the floor to calm it down.