News:
Marcin tried shortenning the slots and eliminated the play on the thick spring in the distributor. He got 15*/28* then and the idle rpm rose so he could close the throttles a little bit. The idle got better, the throttle response is much better now and... no pinging during 4 miles of ride.

Also the dieseling is gone!

The induction is 2x600 cfm edelbrocks and idle vacuum 16", the metering rods are suck down at both N and D.

Edit:
whether it is lean on the main circuit - plugs look great (Marcin is a long time moto mechanic) but idle burns eyes. When I follow him in my challenger every time he nails it I see a puff of black smoke and I can even smell the gas! So I doubt the secondaries are lean.

The CR is high as he used special order forged pistons with 4cc pockets, flush with the deck and stealths are milled over 0.040". Cranking Cr is 170-180psi with XE274H cam.