Setting initial advance, at 800 rpm, the mark is a little off the scale. I have a Craftsman dial back light. I moved the dial and at 15 deg dial movement the timing marks lined up at zero. Does this mean there is is 15 deg initial advance? Also, at 2500 RPM the I had to move the dial to 40 deg for the timing marks to align at zero. Does this mean I have 40 deg total timing (not including vacume advance. Vac adv was disconnected for all tests). Thanks