Thermoquad to lean ?

What I like to do is isolate the primaries from the secondaries and tune them one at a time.

It does sound like a lazy pump though.It needs to flow immediately when the throttle moves the tiniest wee bit. Not within 1 or 2 millimeters.
Dont forget about that little screw right in the center of the m-rod tree.Give it a full turn CW and retest