I have a 79 cb 750k I can´t get it to turn over 6000 rpm. I have removed the stock airbox because of clearance problems do to frame mods. Anyway it now has pod filters on each carb, I have hooked up the vacuum hose into the back of one of the pods. I put in a stage three dynojet kit and tried everything on jetting. When it hits 6000 it starts to cut out bad. Any advice would be great. By the way it runs great at idle and up to 6000.