Need some advice. For a while now I have been thinking of replacing my stock carb with a S&S Super E or Mikuni. I have an 01 dyna wide glide and the guy that I bought it off of said that he put bigger jets in it. I think that he might of put to big of ones in. Because once it is good and warm and I stop to get gas or something short like that to where I shut it off for a short period of time (couple of minutes) and I go to start it I have to twist the throttle to about half and black smoke rolls from the exhaust. But if it sits for say 20 min or longer and I go to start it, it will fire right up with no smoke and no twist of the throttle. So could this be something with the jetting? Also what are the opinions of putting an S&S or Mikuni Carb on?