One rebuild kit for the TK-26/27 carburetors is the K&L 18-2461. This kit came with a 32 pilot jet (not pictured in the photo below). This is the pilot for Kz550 motorcycles using Tk26 carbs. The label on the kit only lists the Zx550, but the Zx550 uses Tk27 carbs with a 34 pilot. So while the kit is labeled for a Zx550, the only jet that comes in it is for a Kz550. The rest of the parts will work in either Kz550 (Tk26) or Zx550 (Tk27) carbs.

No other jets came in the kit. No metering needle came in the kit. The mixture screw did come in the kit, and should work for either Tk26 or Tk27 carbs.

K&L rebuild kit 18-2461