I would try a 40 pilot then go from their.Im not sure on your top.I put a Scp pipe with a 270 and was way to rich.With the fmf on i only run a 200 With the Scp ! was  was running 230 with it.In summer i ride A 35 pilot and 195 main on stock carb.The 40 im running now is too rich but it hasnt been above 22 degrees for the week.Im going back to 35 today.Its above 40 today and in the 60 for the next 3 days.Also have you done a leak down test to make sure you dont have any leaks.