"If the carburetors are absolu
"If the carburetors are absolutely clean and nothing else will straighten out the idle, that would be the route I'd take.
However, before drilling out those jets, I'd check to see if the original jets can be purchased at whetever location you're at just in case.
The jets in that engine should be OMC part number 323003 which have a inside diameter of .025. The number 25 would be marked on the jet itself.
If your jets are indeed .025, I'd try enlarging them to .027, just a couple thousands.
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