Imma' 2nd gitsome on this one as I am and was riding the exact same thing. I had the 3T pro and Zipp SLs on the bike and the front end was just a little softer than I like. Went full Deda with the Zero 100 bar and stem. At 6'0'' and 145-150 lbs it was way to stiff. So I kept the stem at a 120mm/-8 and put the Zipp bars back on and now all is well. As to stiffness, I'm of the opinion that ultimate stiffness on bar and stem can be a bad thing. I for one, at my size, find that overly stiff bar and stem combos can be uncomfortable. Just sayin'6"0 and 150 lbS?! Good God Man! Have you replaced your bones with carbon fiber and veins with latex?
You must really ride A LOT! That's more substantially WW than a 12 lb bike.
WTF..are you on glue? I just did the metric-BG conversion and I'm 145 lbs and 6 foot 1. I ride/race with very similar guys in the UK, quite a few have slimmer ratios. I don't think the numbers you quote are that unusual, certainly not enough to initmate the man might be a carbon-framed cyborg
i ride the zero 100 stem (standard version which i swapped over the steel bolts to ti) and 3T rotundo CF bars. can't get the things to flex, at least from what i can tell.