While you're at it drive out the roll pin & take off the OE collar & add some 1/2" ID shims/flat washers ( www.speedwaymotors.com has a cheap set of em) to reduce the end play to .005" then replace the collar and drive the roll pin back in. Also see how much rotational play you have in the lower tang/intergear interface by lightly twisting the rotor back & forth, not hard enough to get into the springs. Peen the end of the tang to expand it slightly to reduce that. 3 deg of slop there means the ign can adv/retard 6 crank deg, which is way way too much