I'm trying to understand the circumstances that this happens under. So, when you are cruising along at 2200rpm, are you completely off the throttle- then slowly tipping back into it? I'm going to suggest checking the accelerator pump arm travel. If that's the case, maybe there is not sufficent accelerator pump shot to cover the slight opening of the throttle plates. The slightest movement of the accelerator should cause even the smallest amount of fuel to be discharged. The pump arm could be out of adjustment. There should be no freeplay between the arm and pump cam. But in the same respect there must be enough clearance that when you apply full throttle you don't push the arm beyond the pump limit. Set it up so the arm just makes contact with the cam, and when you tap the accelerator you see a bit of fuel shot. I wouldn't go toying around with the accelerator pump cams just yet. This sounds more like a simple a fix. Another thought is what rpm does this car idle at? Do you have the idle set screw turned in more than one full turn? If you have the- You know what, check the pump shot first then get back to us.
Ed
!!DISCLAIMER!! NOT RESPONSIBLE FOR BURNED OR SINGED EYEBROWS-NOSEHAIRS.(engine off while doing this

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