What was found
FLIGHT CREW NOTICED A LEFT ENGINE ROLL BACK AT CLIMB TWICE, ENGINE FLAMED OUT, ENGINE AUTO RESTARTED, WAS FINE FOR THE REST OF THE FLIGHT. AFTER LANDING LEFT T/R WOULD NOT STOW, POWER LEVER LOCK IN PLACE. MAINTENANCE INTERROGATED THE ENGINE COMPUTERS AN RESOLVED A REPLACEMENT OF REPLACED CH A ECU ON LT ENGINE AND CH B ECU ON RT ENGINE, DOWNLOAD EEI, OPS CK GOOD.