Mechaniclly set at 30 or locked out will not allow for the 20 or so it likes at about 2000 rpm WOT. Your initial and total sound good for wide open throttle. Now set the start up and cruise timing.

Also will not crank at locked mechanical 30,or might crank weak costing ignition energy.

I cannot set my 440 rpm package at 18 and 34 total mechanical with a Msd billet distruibutor and expect it to start without cranking the hell out of it. It needs the proper settings for the vacuuum hei system to drive around well.