Timing set questions

with it at #1 TDC compression yes the marks are at 12/12 like where you are at now. wouldn't hurt to turn it 1 turn to get on 6/12 cuz it is easier to confirm that the dots are lined up vertical/plumb without the crank snout in the way. I ain't sure why for decades manuals/instruction sheets never mention that at 6/12 you are on #6 compression not #1 cuz #1 compression is a standard starting point! and the pics always show 6/12 cuz that is needed to confirm the straight line. We lost a race once cuz of this, wouldn't restart & we couldn't figure out why till later. right now for you at 12/12 you are at #1 compression so just get the dampener slit at 15 or wherever you are comfortable with & time the dist ready to fire (magnet even with the tooth) & with the rotor is under the #1 post in the dist cap.