Name:   CAT BOAT - Subject:   Cat, I may have figured it out. Date:   8/25/2014 8:35:25 AM

If they are BEHIND the throttle blade, they are used to "sinc" the carbs with a machine called "Vacuummate".  IF that is what they are, then yes, they should be covered.  Some carbs have them some do not.  When you sinc them, they will not sneeze at idle.  If you get time today, call.

Steve

334-358-2838