39 fcr carb questions

[416 EXtreme]

I have a 425 now,i just sold the lectron and need some info.What jetting should i run(pilot and main.)?Also do you guys with the carb run a vent hose into your airbox?If you did, what do you hook it up to on the carb?

[nakomis0]

no vent hose here. 168 main

[twisted threads]

I run a 52 pilot, 170 main no vent hose