Need help with rotor phasing

Right now it is 24 initial with 10 degrees mech. It was 18 initial with 18 mechanical still did same thing. I put a mark on the distributor in align with rotor button. I took the cap off and ran the #1 piston till it started up on compression stroke at 44 degrees on the crank the rotor and the mark I made was aligned but the reluctor was not aligned I continued to turn the crank till the reluctor was aligned. The crank read 31 degrees.The rotor was well past the # 1 post on the cap. This is a vacuum advance dist.