Hi just got a few weeks ago a 1976 USA CB750F1 Supersport. Pretty much in original condition it came to UK in 97. It had a oil leak on the neutral switch, oil leak on the tacho drive, leaking front brake master cylinder, and a bad misfire at 60mph+. All leaks now sorted and misfire down to coils and leads I think. I had a CB750f1 in 1977 first time around that I did over100,000mls on so do know them pretty well. Now revisiting my youth. Also in the garage 1973 CD175 K4, 1973 PC50 [still to restore]. 05 Blackbird. This looks like a excellent source of information and entertainment.
Cheers Chris.