Sxr700 tm38 needle jet ,needle

Can anyone help me with carb set Up.
Im running separate mikuni tm38.
I cant get a hold of mach z 800 needle jet and needle.
Is there another set up that is a Good starting point for my 38s

Engine setup:
Red head, ported after turks specifications
Cut head 0.5mm
Slp pipes
Srx reedcage with boysen Reeds

Thanks,