All my problem turned out to be was a bad seal at the fuel pump. Then rubber o-ring was missinstalled. Instead of being placed back in the feed line, it was pushed halfway down the nipple on the fuel pump, and couldn't maintain a seal. It was hard to start because it couldn't build any fuel pressure, which was also causing it to sputter at wide throttle as well as probably running it extremely lean. I reinstalled it inside the fuel feed line (where it would properly mate with the aluminium tip of fuel pump) and that did the trick. Did you do your own fuel pump install, or did someone else do it for you ? it might be worth checking out.

-DarkOne
I'm so bad, i should be in detention.