Everything I said in post #139 was incorrect.
I stand corrected and bow my head in shame.
Chain driven counter balancers as you said is correct.
(I was very vigorously educated a few hours ago)
You can actually hear the chains on the 88B. What's worse, there is for lack of a better term, a laggy feeling to the 88B compared to the 88. It's led to a lot of veteran bikers tearing up perfectly good carburators thinking it's a jetting problem.