I have a 1980 CB650 and I'm having a little issue. I have experienced that while cruising at top gear for some time the bike will stall out as if it is running low on fuel despite a full tank, my guess is that this is due to the carbs needing to be cleaned or some sort of contaminant in a fuel line. So my question is do I need to get the carbs professionally cleaned or can I just put some Seafoam in it and I'll be good. Also will this help raise my gas mileage I currently get around 40 mpg. Thanks for your help.