360 distributor set up

in the past I've read of several ways to set the initial dead on. there just was a post on the inaccuracies of the FBO plate (but said it works good other than that). he said 10 on the plate is 6 deg.. 12 is 7 14 is 8.5 16 is 10 18 is 11. & I would confirm that your light is dead on.