Can some of you ignition gurus please walk me through the correct method to properly set point gap on a Mallory flattop dual point ignition? I am using a ZC unit with a single condenser and dual points, MAL-24875B. The distributor is on my Ford 223 inliner. A couple of topics to cover, if you will please... I've read to use a feeler gauge to initially set the gap, and then others have said to not use a feeler gauge. How say you? Some old-timers swear by a matchbook cover to set the gap. Folklore, or ok in a pinch? I tried it and the motor ran terribly. For my inline, what is the proper gap? The Ford manual says .032"-.035". On one website, it said .029" for an inline using the Mallory points. What is the proper gap? I have a dwell meter and I understand degrees of dwell. How do I set the primary points and then the secondary points? What is the safest way? Block off one set with a piece of cardpaper? What are the correct degrees of dwell for an inline? Is it even necessary to use a dwell meter? Some say "Yes" and other say "No." And how often should I re-adjust the point gap? Thanks, guys. I need the benefit of a proper education here. Been relying on too much folklore and that doesn't always work so well.