backfire

Hi all, 1983 CB750F. I recently got the bike running after being sat in a garage for 10 years. I wired up some new coils, changed the plugs, rebuilt the carbs and connected a battery and she fired right up. After a few days of starting on the button, with the bike ticking over on the driveway...

So I don't know where to really start on this. Got caught in heavy downpour, got home and couldn't cover because of hot pipes. Started the next day, idled fine, runs through revs smoothly. Driving is another story...lame acceleration, backfires, bog/surge constantly when throttling. Thought...