1970 Duster project in Sweden

Post 218..picture 3... See the rough edged situation, underneath the valve job? Take some 80-120 grit sand paper, sand it smooth, & concentric, to the eye..... Just my opine...
Yeah. Everything is still rough and I will have to go over it again and finish with sandpaper rolls. My hands get fatigued after a while so I do a little each time I'm in the garage.