Beardog, You never actually stated why you don't like the carb. What a lot of non professionals do is guess what problems their having and just replace parts to see if it fixes it. The only thing it usually does is scratch their itch to buy parts when it usually wasn't even the parts fault for the perceived condition in the beginning. I am not saying your diagnosing and technical skills are not good hell they could be excellent just to be careful because we all tend to fall down that rabbit hole from time to time and it can be a time wasting and costly endeavor. Straightening out certain runability problems can be very challenging in person for even the best techs. Over the internet it becomes a guessing game unless there is a lot of back and forth and testing in between. What I usually suggest is to find a local club and network to find a fellow enthusiast whos good at diagnoses and setup and pay him in beer or whatever. The absolute best way to setup an engine to be it's best self is to find a good race and tune machine or speed shop who does dyno tunes. On the dyno you can see most everything you need to set a motor up good including timing events and air fuel ratios. I have seen huge seat of the pants gains in motors with just those 2 things. Even when buying the best matched parts for the intended target power # without the the proper tune and setup you will leave all kinds of power on the table as well as the possibility of runability problems.