ashley95, I think his trouble hes having may be due to his low end setting?
if its at idle and he slaps the throttle and it falls on its face then i would start by turning in the low end a notch or two or vise versa until he has a smooth transition. if his settings on the low end are correct he can tell by pinching the fuel line and the motor should raise the rpms by 2-300 and then stall not carry on.that would tell me hes to rich on the low end?

my self and a few others all had the same trouble on our new nexstars out of the box a couple years back


KE7EHA,I you dont see any air bubbles in the fuel line when the motor is running then there should be no trouble within the fuel system at all