Second post on the forum I have another 1978 cb750 that will only run decent with the choke on and if i turn the choke off the bike will run but if I give it throttle it will bog and die out. The carbs are brand new (reman) and very clean. Was also wondering what type of fuel is best for these bikes I run ethanol free but am unsure of premium would be better. Anything helps thank you for your time.