Try setting your timing for full advance instead of initial. Since different dizzys have different mechanical advance settings, It's hard to give someone a initial setting that will work in their situation. unhook the vacuum advance and use the fast idle screw to raise the RPM to 3,000. Set the timing to just under 35 BTDC ( a "turnback" dial timing light makes this easy). Now take it for a ride, and try to load up the engine by accelerating in a too low gear (4th at 25 MPH for example) it should ping but not much. If you can't make it ping in that condition, You can afford more advance. If it pings like mad, you need to retard it a touch. This test will simulate high speed driving in a way. When your really in the throttle at 120+, with the wind load, it's just like the low speed test above, except, you don't hear the pinging with all the engine/wind noise untill you melt a piston. Once you've got it dialed in, I'm sure you'll find your total advance in the 32 ~ 35 range. Now, record your intial advance and you'll be able to discrerne your dizzy's advance spec. your total is 34 and your intial is 19 so that's 15 degrees of mechanical advance Your dizzy has a 7.5 advance plate (Lucky, you have the "Euro" dizzy) your total is 34 and your intial is 15 so that's 19 degrees of mechanical advance Your dizzy has a 9.5 advance plate your total is 34 and your intial is 12 so that's 22 degrees of mechanical advance Your dizzy has a 11 advance plate Let's say your total is 34 and your intial is 6 so that's 28 degrees of mechanical advance Your dizzy has a 14 advance plate (now I suggest you adjust your timing by replacing that god-awfull smog dizzy)