So I have a stumble on my daily. SBC with Q-Jet (pre computer style) remanufactured from Jeg's and installed about three years ago. Ran fine until recently. Crack the throttle and the things bogs. Even slight pressure changes on the gas pedal to maintain steady speed produces a hesitation. Took the thing apart and sprayed all the holes and grooves and etc. with carb cleaner. Didn't see any trash or water in the fuel bowl. Put it back together and no change. Idles fine around 800. Steady vacuum at about 15 inches. Ideas? Thanks.