Each GL1000 carburetor body has of course three different removable air bleed jets, removable thanks to its automotive origin. The primary main circuit has one, the secondary main circuit another, and the idle circuit has its own. Three differently placed and differently sized air bleed jets. Times four of course. Times five year models, as each varies. (Let's see, that's 60 possible ways to screw up!). Goofy carb kits, goofy literature and even goofier "professionals" get this all wrong. You must have the correct jets in the correct places for good carburetor performance. Easily every third GL1000 set I receive for rebuild has them messed up. Make sure they're right.