Bruce said this:
"If you want to start I would start with and old style carby and work from that. Starting at a modern complex carby with problems is difficult. Go hunt out an old prior 1972 850 and stuff that on anything you want and it goes great, so anaylze that carby. So why bother with the new stuff? I have dyno'd new ultra everything 950's 750's and they are all the same, absolute rubbish. Put the old 850 on there and 30 more HP smoother running, better emissions, cooler engine. I don't know if its like that in the USA but that's what happens to me every time here in Australia."
Start here:
Calibrations for an early list 850
PMAB .026"
SMAB .025"
PIAB .076"
SIAB .055"
P & S IJ .035"
E-bleeds 2 x .026" or .028" in each main well
Kill bleed P&S .028"
PVCR P&S .070"