There is no carburetor that you can stick on out of the box and have it be perfect in all driving, starting, cold, hot, wot scenarios. None. Not one. I don’t care what anyone says. Before you buy another carb, (that you’ll have to tune anyway) spend a little time learning about the carb you have and how to make some basic adjustments/tune changes. They’re all fairly easy to tune and I’ll bet you can make a pretty large improvement on where it is now.
I agree.....and I FEEL like we've done that. Of course, not being there in person and only helping by phone and Fakebook, I don't know for sure. Colin's really sharp though. I tell him once how to do something and he's all over it.