Does the kit include the rubber vacuum bellows? I've always worried about what might happen if these ever deteriorate. It looks like it might be a gobstopping expensive part that can't be 'fashioned' on my own like so many of the parts I replace.
If it's too dear, I might consider replacing them with some new Mikunis. Anyone else ever considered or done this?
edit: I have "flat top" Bings. They are different from the "dome top" Bings in the way the diaphragm is held in place.
What style are yours?
The rubber diaphragms are usually not included on the R65 kit. But they are replaceable, and are not that expensive. You would do well to replace the white ring that holds them in place, as well, though.

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I personally don't recommend the Mikunis, unless you are going racing.