Aisin's aren't that hard to rebuild. Get the gasket kit from any automotive parts store, get the jets & idle needle screw from a dealer, woila. Most cases you don't even need jets or hardware. If the jets get clogged, strip a 1/4" section off some 14 guage wire and use the strands to "brush" out the deposits. A wire brush kit and some carb cleaner spray goes a long way.
As far as the Holley bit, it's just too much fuel even if you do jet it back. Aisin's IMO are better to run than Holley's because they can run on steeper angles without flooding out. Plus they are easy to modify to be able to run at even steeper angles. Think of it. Holly's were originally made for stock car races for tracks and strips. They weren't meant to run at extreme angles. To upgrade them to the Truck Avenger model you have to buy and swap in a different needle and float set up, plus get different jet sizes. That's not including the adapter plate, air filter housing, and throttle cable adapter.
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