on the timing I'd set initial w the vac gauge method (max vac then back off 1 in hg while resetting your idle speed) then shorten the slots to get 36 total (vac adv disconnected/plugged) then play w springs staying just under the pinging point at WOT up thru the gears on your hottest/driest day) THEN plug in vac adv & work w it staying just under the pinging point at PART throttle (high vacuum) above the RPM where the springs (mech adv) are fulled advanced (3/32" allen wrench & CCW delays the start of the slope (needs higher vac to start it but the amt stays the same) and may need to further limit the arm travel (the amt) into the can by soldering strips of feeler gauge on either side of the notch or source a can w less vac (it's stamped on the arm (in dist degrees) & a can w ~7-9 might be a good start. You want the can for better mileage/cleaner plugs but it will take the most work of all the dist subsystems to get it spot on as it has 2 adjustments. Get the timing right THEN on to mixture (A/F meter-best, plug reading-so so). Want no pinging/overheating & better too rich (to a point) than too lean so yeah I'd exp w bumping the jets up