Still hesitates off throttle...

Interesting that the hesitation lasts longer with the bigger pump shot.

Doesn't look like there's anything wrong with your advance curves.
Yep it is not as extreme, but it lasts for about 3 seconds or so. Previously, it would fall flat and almost die, but only for about a second and a half before it would catch itself. Is it possible that the pump spring has lost it's tension and just isn't giving the pressure it should? Maybe that accelerator pump spring is bad.