If your only complaint is your off-idle hesitation then i'd put money that just a rebuild would do you no good, its quite a common issue with motors with hotter than stock cams. There was a post on here not a week ago with the same issue and the springs was the fix...If you dont want to spend $45 on the tuning kit, then just buy the spring assortment. I put that up there in case you wanted different jets/rods if your a/f ratio needed adjustment...Moving the pump shot to a more aggressive shot will probably seem better because it is helping band-aid the slight hesitation due to too weak of metering rod springs by giving it slightly more fuel. Your metering rods are probably down/lean at idle and as soon as you step on it will be lean until those springs bring the rods out of the jets and give it more fuel. Stiffer springs will bring the rods up like they are supposed to and probably cure your issue. Pump shot is more orientated for start-up, and when you really mash the pedal off the line. Not much for just leaving a stop sign or what have you...