B737-300. MULTIPLE PROBS IN TRYING TO PLAY CATCH UP; TO GET ON SCHEDULE.

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DAY 2 OF 4; OPERATING ON REDUCED REST DUE TO MULTIPLE RADAR APU PROBS AND ACFT SWAP. ARRIVING ACFT ON-TIME; PREFLT GOING NORMALLY; PREBOARD PAX ARRIVE INCLUDING 2 JUMP SEATERS. SITTING IN COCKPIT; ONE JUMP SEATER COMES UP AND SAYS; 'WE ARE VENTING FUEL ALL OVER THE RAMP.' I TURNED OFF ALL PUMPS AND WENT DOWNSTAIRS. FUELERS HAD ALREADY GONE. ADVISED RAMP TO CALL FIRE DEPT. WENT BACK UPSTAIRS; HAD PREBOARDS REMOVED FROM ACFT. NOT TOO MANY; ONLY ABOUT 6 PAX. DISPATCH ADVISED; MAINT CALLED AND AUTO-FUEL SHUTOFF VALVE MEL'ED 28-10. DEPARTED 15 MINS LATE FOR BWI. ENRTE BWI #2 GENERATOR DRIVE OIL TEMP GAUGE BECAME ERRATIC. CALLED MAINT IN RANGE AND ADVISED. MAINT CHANGED GAUGE AT BWI. DID NOT HELP PROB. MEL'ED 24-10. CALLED DISPATCH; AMENDED RELEASE AND DEPARTED FOR BDL. ARRIVED BDL 15 MINS LATE. MADE COMMENT TO 'A' FLT ATTENDANT THAT IT WAS NICE NOT HAVING TO DEAL WITH AN ACFT PROB FOR 1 LEG. GOT RELEASE; NOTED THAT THERE WAS 'AN' MEL ITEM. SIGNED RELEASE; GOT A GREAT TURN; AND DEPARTED 7 MINS LATE. AFTER DEP; NOTICED ONLY 1 MEL ITEM ON RELEASE 28-10. MEL 24-10 HAD BEEN OMITTED. CALLED BACK OUT AND OFF TIMES; ASKED FOR PATCH TO DISPATCH. ADVISED DISPATCH OF ERROR. CALLED ON ARR IN BWI TO FIND OUT WHY IT WASN'T ON RELEASE. AS BEST WE COULD DETERMINE; RELEASE HAD ALREADY BEEN SENT BEFORE MEL 24-10 WAS ADDED IN BWI. SHIFT CHANGE AT DISPATCH AND THE LAST LINK WAS ME. I FAILED TO LOOK AT THE MEL ITEMS CLOSELY ENOUGH AS STATED IN THE FOM TO CATCH THE PROB. NO EXCUSES; I JUST MISSED IT. ONLY FIX IS EXTRA VIGILANCE AND LOOKING AT ALL ITEMS ON RELEASE.