[Trackrash]

My car goes lean when hot. HOWEVER when you are driving on the track with all that air going through the carbs, I can't believe the carbs are getting hot. Heat soak of the carbs occurs, at least on my car, after I park.

You may want to play with your float levels. I have found that with mine set at the low end of the spec, mine don't have a problem on the track. If set on the high end of spec my motor will go down on three cylinders in a turn.

Another possibility is one or more floats may be hanging up or are loose on the shaft causing the needle and seat to leak in turns when the floats move around.