A couple days ago, I got 3 Keyster K-584 carb rebuild kits from
Sirius in Canada. They're not 100%, but considering the fact that Triumph wants $8 a pop for float bowl gaskets & doesn't sell the float valves they're definitely worth the $12.50.
The bad:
O-ring for front of float not provided.
O-ring for vacuum connection at top of carb not provided.
The good:
Float bowl gasket works.
Float valve works.
O-ring for mixture screw provided.
O-ring for valve side of float provided.
I was slightly disappointed at not getting all my o-rings, but I definitely feel like it was money well spent.
BTW, an o-ring with a slightly smaller ID & larger section can be used for the vac connector up top, but don't even try anything with a thicker section for the front of the float.
Cheers,
-Kit