What was found
OVERHAULED ENGINE INSTALLED ON AIRFRAME APPROXMIATELY 75 HRS AND 4 MONTHS AGO,CARBURETOR SET AND ADJUSTED TO SPECS AT INSTALLATION. ENGINE BECAME ERRATIC AND NEAR STALL OUT CONDITION WITHIN THE LAST 1 HOURS. ATTEMPTED TO ADJUST RICH/LEAN SETTING AND IDLE. ENGINE WOULD NOT RESPOND AS NORMAL. REMOVED CARB, DISASSEMBLED, INSPECTED. ONE HALF OF FLOAT NEARLY FULL OF AV 100LL FUEL, SLIGHT SPLIT NOTED AT FLOAT BOND JOINT. FLOAT IS MADE FROM A PLASTIC MATERIAL, CARB SENT FOR REPAIRS.