OK for first go. Presumably you have timing tape or similarly marked damper - hence no need for the dialback feature. That's fine. 24º at 600 rpm 25º @ 900 rpm 30º at 1000 rpm 34º at 1150 rpm 44º around 3000 rpm. That's enough to get a sense of what's going on. With just the 600 and 900 readings, if they are even ballpark, too much initial. Try around 20* @ 900, readjust idle fuel mix screws. Graphicly, it looks like this. Tips for next time: Try to get timing measurements around 1500 and 2000 rpm. Vacuum in gear at idle is more useful than knowing the vacuum in neutral. The vacuum source for the vacuum advance needs to be blocked. its fine for the canister to be open. You may already know that - just wasn't clear in your post.