OK, so I went out again today.
Tom, just like you thought, the vacuum gauge needle bounced all over the place. I saw the needle pause at 5, 8, and 20 inches momentarily as it idled. Mostly near 20 inches when you revved the engine.
Tried out a new (correct) needle for the VM 26-606 carb. The one that came with it was just one the guy had laying around. Took off slightly better, but was missing power at WOT.
Installed the "old" needle and gained the top end back.
Fuel filter never got 1 air bubble in it today. Probably did about 20 laps with no issue.
Only differences today:
VERY full gas tank
Low 70's temperature outside
Still using stock camshaft.
I'm going to have to try putting the A-11 cam back in and see if the problem comes back. (remember, it did do it once with the stock cam installed)
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