Timing at idle (apx. 750 RPMs) 14 degrees BTDC with vacuum disconnected. Vacuum connected the timing should drop to apx. 6 degrees BTDC depending on distributor wear. At 3000 RPM, full advance should be apx. 30 degrees.

The high idle is probably causing the "dieseling" along with a likely "lean" condition common to the Stromberg carb set-up.

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