Hyosung gt250r main jet gasket?

[SuTzu]

Hey all, I picked up an old second hand gt250r and it had bad gas in it, I pulled it all apart and cleaned it all out, I pulled out the main jet and below that is a little rubber/plastic gasket?

I have since dropped this gasket and cannot find it :doh:

I've been looking at jet kits and for the descriptions and images and none make mention of this wee 3mm-ish gasket that was inside, I found it on the end of the jet in the pic
https://i.gyazo.com/36631ee42e11c26bba898c97562efa10.png

Where can I get replacements?

Thanks for your help

[SuTzu]

Seems like they're little mounting seats for the main jets.
Turns out it fell in the carby, even though I shook hell out of it, only once I went away and had coffee and came back to reassemble the other side did it decide to fall out :rolleyes:

Bike now runs farkin mint, had a blocked pilot jet on one cylinder that was causing it to be gutless and unresponsive.