38 mm carbs
air screw 1 1/2 turns,
247 Q0 nozzle,
6DP10 needle #3. Or 35 pilot,
air screw 1/2 turn,
247 Q2 nozzle,
6DH7 needle #3.
Both use a 2.5 cutaway.
try the needle clip position at 3 -4 or even # 5
the pilot should be at least # 35
the air screw at 1 1/2 to 2 turns out.
you should confirm what needle jet is in it QO ?? Q2 ? big diff here
39.2 mm carbs
Pilot # 45
needle jet # 247 # Q-2
jet needle #6DH7
main jets # 300 -320 depends on weather
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