Carter 750 float level

I'm pretty sure this carb is circa '97 or '98, and hasn't been used since then. It's new enough to have the Weber W cast on the top. I compared the primary boosters (without removing them) to the ones in my 1406's and a Carter 625, and the main difference i saw was the end of the brass tube in the 750 booster was open on the end, while the ones in the smaller carbs had a covered/ domed end. If it makes a difference, I'll pull them and get a better look. I searched for some better Carter literature online, but haven't found much besides, or better than, general rebuild instructions. One thing I was considering, is taking a float from the 750 and one from a 1406, and seeing if they're the same physical size?