What was found
(CAN) IN CRUISE, AFTER GOING THROUGH SOME TURBULENCE, THE ENGINE LOST SOME POWER (MAX 2100 RPM), SO THEY RETURNED TO THE AIRPORT. MX RUN UP THE NEXT DAY CONFIRMED THE PROBLEM IN THAT THE ENGINE STARTED AND IDLED NORMALLY, IT WAS HARD TO GET PAST 1500 RPM. CARBURETOR WAS REMOVED AND DISSASSEMBLED AND 4 OR 5 CHUNKS OF TORQUE-SEAL WAS FOUND IN THE FUEL BOWL AND 1 CHUNK FOUND IN THE OPENNING TO THE MAIN JET. THIS WAS PARTIALLY BLOCKING THE FUEL FLOW. CARB CLEANED AND REASSEMBLED AND ENGINE RAN NORMALLY. IT IS SUSPECTED THAT THE PIECES OF TORQUE SEAL ENTERED THE CARB THRU THE DRAIN PLUG, WHEN THE DRAIN PLUG WAS REINSTALLED AT A PREVIOUS INSP.