Flat throtle response and surging below 50f

[mrclubike]

I think i have the flat spot between 4K and 5K sorted out
I tried the 2.68 NJ and 142 MJ and it was worse
So i put in a 2.66 NJ and 148 MJ and it improved
It  is still a little flat just over 4K but not bad
I could go up one size on the NJ that may help
(The temps  were  below 40F  during this)
But  I do not want to richen it to much for when its warmer
As someone  mentioned I think I may  have floats that are a little  on the light side