Vintage FS360 replacement carb?

[UpInSmoke]

Hi everyone, someone brought me a Stihl FS360 from around 1989 to fix, carburetor needs a new rebuilt kit which are easy find but the check valve is leaking, I have a hard time finding anything on this carburetor which is a Walbro HD 1A D9 (markings on the carburetor). If I can't find a check valve maybe another carb can be fitted.

Thanks.

 

[UpInSmoke]

Maybe this one

Walbro 86-578-1​

 

[DND 9000]

The valve jet should still be availible from your Stihl dealer or Walbro. Stihl no. 1120 121 5405.

 

[UpInSmoke]

The valve jet should still be availible from your Stihl dealer or Walbro. Stihl no. 1120 121 5405.

Thank you!