Hesitation issues - need help

I would try changing the power valve but only after you check the vacuum at your normal idle with the vacuum advance blocked off. When you changed your idle speed (down to 700) you probably changed you idle vacuum. The power valve lets extra gas into the primaries when your vacuum drops (when you accelerate). If the power valve is the wrong one it won't give the engine the boost of gas when it needs it causing a hesitation. Advance also has a great effect on idle vacuum. You can change your advance and put the vacuum out of range for the power valve. PVs aren't very expensive so it's a cheap fix.

treblig