Mikuni BSR36
 

Has anyone ever put a Mikuni BSR36 on their klx250s?

I'm putting a new carb on my 2020 DRZ400sm so I'll have the old carb off it.
With all the problems I've been having the the CVK34 butterfly shaft seal I'm toying with the idea of giving the BSR36 a go

I'd say you're on your own with that one. Now if it was the TM36-68 or even the TM36-02 you could get some jetting help here or elsewhere. The 68 is the pumper carb, the 02 is the basic flat slide like has been used on bikes like the SR500.