It seems there are plenty of choices available. I'm currently running a CSP with my carbs and am wondering if the linkage is allowing the carbs to open just a bit as the engine warms to operating temp. I seem to be plagued with banging in the exhaust which among other things is an indication that the carbs are out of synch. I also have a Berg linkage that I used to use on my old engine with kadrons. I know there are others out there... What are you're preferences and why?