Geesh Curt, you're full of questions
Yes, I tapped for the screw and after it was together (hopefully for the last time) peened it over on the back side so it can't come out. The pawl is cut from a piece of 1/8" stainless steel bar stock...I'm sure almost anything would have worked (have you seen what they are putting in lawn mowers lately?). The notches were cut in with the edge of a file and the band stock is simply 16ga steel cut in a strip about 5/8" wide.
I used a small roll pin to prevent the pawl from moving out of engagement too far and also used it as an anchor for the spring.