Hi all:

Perhaps I didn't make my self clear with my first post: My problem happens only when the airplane goes from normal flight to inverted, or passes thorugh inverted position when rolling or loop for example
I understand all your inputs about air flow, but one thing that throws me off is why is there a change in airflow when inverted under the same flying condotion ? Eg level flight to inverted still level. This is why is surmissed about the fact that the carb in normal level flight spits the excess of fuel out, and when inverted the fuel is soaked in enrichening the mix.
However, I do have ( I know it is wrong ) ram air impacting the carb's inlet which in turn could potentially cause turbulence, but the bottom line (I guess) is the extra fuel being spit out that is being soaked back in. I already leaned the low and high with no results.
I will do a proper baffling, as well as run a static pressure line to the diaphragm, and will let you guys know results.

Once more thanks for your valuable input.

Juan