I doubt that Keihin has any excess inventory to blow out, and very unlike the Japaneese to release a questionable product. The older carb hasn't been on a production GG in a few years, a KTM since '03, and Japaneese bikes before that. More likely it was sourced from somewhere else to meet production, just like the ignition. Spares, another company's overstock, worse, who knows? The big buyers of these carbs can specify changes as well. KTM one year had the nozzle shields cut down 1mm to lean the off idle area similar to a slide change. Not saying this is the case but if one were to source a number of spares like this, it would change everything. I guess I'll have figure it out myself, measue everything except the nozzle. I'm almost certain though that the notched slide did not exist before the PWK ASII. Ron at RBD might know I'm sure he has seen hundreds of these.
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