[undy]

If you have a single line fuel system and an electric pump your fuel pressure can creep and over power the regulator and subsequantly your bowl fuel inlet needle valves, did on mine. That can cause the symptons you're describing. If you have a fuel pressure gauge at the carb you can watch it at idle to see what it's doing. If it goes past 8 or 9 psi then you've problems. You can drop your carb bowls levels and see if that makes the situation any better. At least that'll confirm and point you in the right direction. If you have a MSD distributor check the cap too. A poor spark and a rich condition can also be a cause for a hard start too.

Dave