I have this jetting setting from the old forum.
I cannot remember who posted it,but it was for a cast iron 225cc
280 main
25 pilot
3 1/2 slide
107 needle jet
I would start with 30-35 pilot and 300-310 main,then work it down if needed.
Don't blame me if you hole the piston
On my 250 with the 32mm,I must use 40-45 pilot and 320-330 main.