reread what I posted. it may not be the timing, it may be the advance springs in the dizzy are too light, so you're setting your neutral idle RPM up on the mechanical advance curve. no amount of fiddling with base timing will help if this is the case.
1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!*** 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
