MINE WAS FROM OHIO CRANKSHAFT.
Like I said I mic'ed it but only in the center. He said the balance was close enough for a street engine but not if it was being ran hard.
Don't know anything about balancing and bob weight but what he said was he only had to over balance it I think 10 grams in the rear to make it right...said he just needed to drill a hole or something and it would be right...so I doubt that was my problem. Sounds like it was pretty close. I forgot to ask about taper I was half asleep when he called(I work nights)