What I did .
You can try this next time . I took chrome foil and covered the whole thing . This is what you do . Do this and then trim around the Big edges and make sure your foil is down and tight in the instruments . Now put the white paint in there . Just a light coat .The paint will drift away from the top edges of any detail in the instruments .
Then lightly take a cotton swab and rub the detail cleaner . Let dry . That way you are free to paint the pointers and dial readings . Don't forget to use magnifiers for doing this so you can see the detail better .
You will then have a killer dash . After all you are talking about the "Truckers Cadillac", a Peterbilt ! T.B.