140L spitting fuel

[Ken Thompson III]

A friend at my local field is flying a 140L in a pattern style plane.  He tells me that when the motor is running at about 1/4 throttle or below, it is spitting fuel from the carb.
He pulled the motor and put it on a test stand where he tried to adjust both the pump and the low end needle to get rid of the problem.  I believe the carb was spitting fuel until the adjustments made the motor quit.

Any ideas would be appreciated.

Ken
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