Well, I desmogged with JimC's kit and installed a non-USA carb from City Racer. Fired right up and I tuned the timing and carb mixture. It runs well in the shop and the vacuum at idle has jumped from 14" at 7,400' ASL (17" seal level) to 16" at 7,400' ASL (19.5" at SL). In the shop, the engine now easily revs higher and sounds better without the air injection (AI) system. On the road, the secondary still only opens slightly (paper clip test) and still no pull above 2500 RPM.