Opinions on these carburetor restrictors....

Garrett Ellison said

I would rather see a set screw than J-B Weld or epoxy, the additives in gasoline and ethanol and epoxies in particular don't play together too well in the long term.

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where are the going to go? They rest on the booster. set screw could ingest. How about an interference fit.

BG uses the same approach to alter the King Demon CFM, although a little more refined....