What was found
AIRCRAFT WAS GROUNDED, DURING CLIMB THRU 10,000 FT, NOTICED 2000 LB FUEL IMBALANCE, LEFT MAIN LOW, ALL INDICATIONS NORMAL. REDUCED POWER AND RETURNED DEPARTURE, FUEL IMBALANCE REDUCED TO 1500 WITH LOWER POWER SETTINGS ON DESCENT, NO FUEL LEAKS NOTED FROM WING VENT OR LT ENGINE IN FLIGHT OR ON GROUND. EMERGENCY DECLARED. STUCK TANKS TO VERIFY FUEL QUANTITY IAW FUELING MANUAL. ACCOMPLISHED FQIS BITE IAW FIM 28-44-00. ACCOMPLISHED ENGINE RUNS AND LEAK CHECK WITH PILOTS. NO LEAKS FOUND.