Not Ranked
1. Check for vacuum leaks, gaskets, leaks at throttle shafts and leather bearing seals.
2. Be sure the auxiliary Venturis are snug in the main body and do not wiggle, if they are loose that cannot pull emulsified fuel from the mainwell.
3. Are the cylinders similar on compression? Plugs should be light-medium brown, not grey.
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Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way 
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