ALT OVERSHOT BY THE FLT CREW OF A CARGO B747-200 AFTER DEP RJAA; FO.

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ON CLBOUT FROM NEW TOKYO INTL ARPT; CLRNC ALT WAS 7000 FT MSL. STANDARD CALLOUTS 'TWO THOUSAND TO GO' AND 'ONE THOUSAND TO GO' WERE MADE AT 5000 FT MSL AND 6000 FT MSL RESPECTIVELY. PF RESPONDED. PF WAS HAND FLYING AND INTERCEPTING NRE RADIAL 137 DEGS ON 120 DEG HDG; PAPAS SEVEN DEP; WHILE CLBING. ACFT WAS FREIGHTER AND LIGHT-WT (587000 LBS AT TKOF). MEL 27-18 (INOP LEADING EDGE FLAP PNEUMATIC DRIVE) WAS IN EFFECT. CLOSE IN COMMUNITY DEP PROCS DELAYED FLAP RETRACTION UNTIL 3000 FT MSL. ALTERNATE LEADING EDGE FLAP OP MADE LEADING EDGE FLAP RETRACTION MUCH SLOWER THAN NORMAL. PF WAS THEREFORE CAUTIONED BY PNF TO OBSERVE FLAP RESTR SPDS. PF RESPONDED AND INCREASED NOSE UP ATTITUDE WHICH RESULTED IN HIGHER CLB RATE. I; SO; WAS PAYING CLOSE ATTN TO ASSURING LEADING EDGE FLAPS PROPERLY RETRACTED AND STOWED. I NOTED ALT EXCEEDANCE WHEN MY ATTN WAS CALLED TO IT BY PNF CALLING IT OUT TO PF. I OBSERVED 7500 FT MSL AS PF CORRECTED BACK TO PROPER ALT. I BELIEVE A COMBINATION OF FACTORS WAS INVOLVED. PF WAS A RESERVE PLT WITH NOT MUCH FLYING IN LAST FEW MONTHS. ALTERNATE FLAP OP PROCS TOOK SO'S ATTN FROM IMMEDIATE ACFT PERFORMANCE. DELAY OF CONFIGN AND LIGHT ACFT COMPRESSED EVENTS TAKING PLACE NEAR REACHING INITIAL LEVEL OFF. PF DID NOT TAKE IMMEDIATE AGGRESSIVE CORRECTIVE ACTION UPON HEARING PNF CALL ATTN TO OVERSHOOT. HE RESPONDED AS IF FLYING A PLANE LOAD OF PAX RATHER THAN A CARGO ACFT. I BELIEVE THE ALT OVERSHOOT WAS MORE THAN IT MIGHT HAVE BEEN AS A RESULT. SUPPLEMENTAL INFO FROM ACN 582725: AS THE PNF; I ANNOUNCED 'TWO TO GO' AT 5000 FT AND 'ONE TO GO' AT 6000 FT AND THE FO; PF; WHO WAS HAND FLYING RESPONDED IN KIND. I LEANED OVER TO DIAL IN THE INTERCEPT RADIAL OF 137 DEGS OFF OF NRE VOR AND LOOKED UP TO SEE US PASSING 7200 FT IN A CLB. I ADVISED THE FO TO PULL PWR AND GET THE NOSE DOWN.