I managed to get mine to run "OK" using 162.5 Mains. Those were awesome on a pair of Dell 40's with 34mm venturiis. Get up on the mains and it really rocked and still got better than 26mpg, but it had a hesitation below 70mph so I just tended to cruise on interstates at 80+. Worked for me.
Dave deleted the horizontal tubes, dropped the venturiis to 32s, ran the idles down from 65's to 45's and the mains from 162.5 to 130's. It doesn't have the same "snap" when you stomp on it at 75mph, but it doesn't hesitate below 60mph any more, either, and I'm happy with them.