Base jetting Help!!

[88-310r]

I was curious if i could get a bit of help from everybody out there. I have a new motor for my R and have never ran it in my frame and was wondering what you suggest for jetting to start/break in motor. It is a 72.25mm on the short rod with a 39PWK and a Paul Turner t-6 with a fat boy 2 and a rad valve. Stock ignition. I bought the motor used and am in the process of rebuilding it and going to try to make waynoka over memorial day with it. Anybody have any advice on where to start on jets so i can break the motor in right and not have to worry about running it over rich or lean.
Thank you
Rick

[LathersR]

Im running a 182 in a ct350 powervale and a 178 on a ct 330 big bore.. Try a 172 or 175 and go from there.. that should be about right.. sounds like you have a 310 big bore

[88-310r]

Thanks. Yes it is a 310.