PWK carb trouble Mid Body O-ring style Jet block gasket replacement

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Have you replaced almost everything in your carb and you still can't get your bike to run right?
Lean one minute and rich the next?
If you have a older PWK carb you likely need to replace this o-ring style gasket.

https://www.youtube.com/watch?v=t35AApTJY9s

[Sandblaster]

You can get the Jet block o-ring gasket on eBay.
There are two different ones depending on the carb.
I found some on eBay and bought a few

Standard PWK and Long body Air Striker
Jet block o-ring #1 Keihin PWK 33-41 carburetor / 35 36 38 39 40 mid body gasket
https://www.ebay.com/itm/Jet-block-o-ri ... Sw3Hxakr82

Short body
Jet block o-ring #2 short body Keihin PWK 36 38 carburetor mid body gasket
https://www.ebay.com/itm/Jet-block-o-ri ... SwVnlakr8s

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PWK standard or Long Body Air Striker

https://www.jetsrus.com/individual_part ... 32_su.html

Short Body Air Striker

https://www.jetsrus.com/individual_part ... 32_su.html