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911 1974 low (?) fuel system pressure

Fuel System

Vehicle Information: Model: 911; Year: 1974; Body Type: Targa; Total Mileage: 95K;

i've done all the tune-up tasks: (filters, plugs,points,rotor,dist.cover,ht cables,oil, valve clearance,timing,sensor plate height and center)last item was fuel pressures.with ben watson's book and the gage setup:a-cold control pressure@75=31psig (32 book)b-system pressure cold=42psig (65-75 book)c-warm control pressure 41 idle (41-44 book) 50 part (49-55 book) 40 full (38-44 book)d-rest pressure 30psig down to 24 in 20'(16 book)so all except for the system pressure turned out fine, i have a bad trottle response between 1400 rpm and 2100rpm, the rest of the range,it responds just great. Any suggestion ?tku in advance. eduardo mariscal-hay

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