Need help with rotor phasing

For brian6pac the springs are 1 heavy and one light silver and the mechanical starts at 1200 rpm ..To answer revhendo it is a 340 stroked to 416 .570 lift solid roller camshaft 235- 245 duration pump gas motor. When I checked it running I had it below 1000 rpms so the mechanical weights should not be a factor. With the engine not running, when I line up my reluctor with the pick up my crank is at 30 degrees btdc and my rotor button is just going past the #1 post on distributor cap.With the car running at idle below 1000 rpm my initial timing is 22 degrees before btdc. I would think if I shut the engine off and turned the crank by hand to 21 degrees btdc that the reluctor an the pick up would be all lined up because the vacuum adv is plugged off