Having to cut blue gain a lot in "High" bulb.

I have a JVC RS-45 projecting onto a 110" Carada BW screen. I am using a Colormunki and Calman.

Is it normal to have to cut blue by a lot (approx -50)? I switched between low and high bulb and the blue was definetly further off on high.

I did manage to get the delta E's below 3 from 20-100 and the picture looks good to my eye. Just wondering if this is normal or is my screen/bulb/projector combo affecting things.