FLC FAILED TO SET LCL ALTIMETER SETTING DSNDING THROUGH FL180. THE FLC LEVELED OFF 400 FT HIGH AND THEN DSNDED BELOW ASSIGNED ALT TRYING TO GET ON ASSIGNED ALT. THE FLC ALSO MISSED THEIR TURN AT BPR RADIAL.

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FO WAS FLYING. I WAITED A LITTLE TOO LONG TO GET ATIS AND CHANGE OVER. I WAS IN THE PROCESS OF ACCOMPLISHING THIS WHEN WE WENT THROUGH FL180 ON OUR DSCNT NEAR BPR. AS A RESULT; I MISSED THE ALTIMETER CHANGE. WE WERE CLRED TO CROSS DIDLY AT 11000 FT. THE ALTIMETER SETTING WAS 30.39. WITH 29.92 SET IN; WE LEVELED OFF ABOUT 400 FT HIGH. FO SAW THIS WHILE I WAS GETTING ATIS. FO BEGAN A 200-300 FPM DSCNT TO GET TO 11000 FT. NEITHER ONE OF US CAN RECALL IF HE PULLED THE ALT ARMING KNOB; BUT WE GOT AN ALT WARNING AT 10700 FT AND CLBED BACK UP TO 11000 FT. THE CTLR ALSO ADVISED US TO MAINTAIN 11000 FT. WE ALSO WERE LATE ON OUR TURN ONTO THE RADIAL OFF OF BPR; BUT I THINK WE REMAINED WITHIN REQUIRED LIMITS ON THAT. MY FEELING IS THAT WAITING UNTIL THAT LATE IN THE LEG TO START GETTING ALL THE DUTIES DONE FOR OUR DSCNT AND LNDG WAS THE PRIMARY CAUSE OF OUR DIFFICULTIES COMBINED WITH THE VERY HIGH ALTIMETER SETTING THAT MORNING. THAT IS A PRETTY BUSY ARR; AND BOTH PLTS IN THE LOOP IS REALLY ESSENTIAL FOR A SAFE OP.