I recently purchased a set of used carbs on ebay, to replace the carbs of mine, which I discovered had a stripped air mixture screw. I got these carbs today, and decided to make sure I knew what the jetting was, before installing them. These carbs were listed as "already jetted for full exhaust with K&N filter", but I still wanted to be certain of the jetting. I had no clue what altitude these were jetted for.

I pull the bowls off, and noticed that the main jets werent stamped (146, 148, 150). To make sure I had the correct jets, I went ahead and installed the jets I had in my previous carbs, a 148, and 146 (left, right respectively). When installing the jets, I noticed that one jet was complete missing from the carbs I just purchased, that was in my original carbs. I have no clue what this jet is for. I looked through my Dynojet kit manual, and couldnt find any mention of it. I also noticed that the "extra" jet was also on one carb (the left), but not the other. Anyone know what this jet is for, and why it is only one side. Or, why it would not have been in the other set of carbs?

I havent installed the carbs yet to see how they run. I am still going through both sets, trying to make one really good set.

Below is a pic of the carbs flipped upside down, with arrows to the jet in question. Sorry for the blurriness, didnt realize it was blurry till I had the pic on the PC.