Jan´s comment to this question/ comment is right on. I have owned five 1973 Honda CB350G´s since 1974 and put nearly two hundred thousand miles on them in total. When the point gap and timing are set correctly, they have NO hesitation and the engine is a dynamo for such a little bike (0-60mph in 4 secs). However, just a few thousandths off on the gaps, the .014 setting, for both cylinders makes one cylinder spark to be advanced and the other cylinder retarded. It is best to set the gaps and then set the timing (using a timing light) to confirm all is correct. Sometimes you will need to redo this several times to get everything dead on correct. This whole process usually takes me an hour or more because the two gaps work against each other (as I said earlier, one gap tends to advance the timing on that cylinder and the gap for the other cylinder tends to retard it).
There are frequently factory instruction books and shop manuals on ebay for the CB350. However, they are NOT cheap. I paid $60 for a shop manual in April 09 and $35 more for an instruction book.