Demon Carburetor issue

So from a dead stop at WOT it takes off and from cruising and part throttle driving it is a lot better than before. Fuel pressure at idle is about 6-7 psi and I am using a Holley Red Electric Fuel pump with no regulator. At freeway speeds at 2800rpm if i floor it, there is a slight hesitation, but not as bad as before and after the slight hesitation, it takes off. If I do this over and over between varied rpm (2200,2500,2800,3000), sometimes the hesitation is there, sometimes it is not. I also had only 1/4 of a tank of gas in it so I want to try again with a full tank. I am going to get my vacuum gauge and timing light today from my brother and then check that tomorrow after class. I have also never changed springs in my MSD distributor and feel like that might be a good tuning part to have for fine tuning like what I am trying to do.