Which main jet for my DR75cc kit?

I have a PK50XL2 with a DR 75cc kit. Which main jet would be the best for this setup? The original 16/15 carb is as standard set up with a 65 main jet. Is this OK for the 75cc as well?

Hi,

 

we set the jetting with 75 cc by 66-68

may it runs with the 65 perfect too

 

check ignition timing!!!!!!!!!!! 17 degrees!!!!!!!!!!!!!!!!!!!

 

regards

Thanks! I will try the 65 then. Is 17 degrees the original setting, so that I can use a strobe pistol on the existing marks?