Removed the 'T' system and tried leaning out the mixture valve. Now idle mix is very lean, high end is pretty leaned out, and although transition is good the engine loads up with excess fuel if you have the stick anywhere in the middle of the throttle range (aka flying the plane). However no dead sticks.
This is indicitive or too much pump pressure, adjust the pressure down till mid range is not so rich. You will have to richen up the high and low needles after adjusting.