Hello<br />The FDE-11 1957 18 HP Johnson I am trying to fix has a plate, cover or something missing on a reservoir just on top of the carb. I dont know if i can just make a metal plate or if it needs a part.<br />Is this a air filter chamber like on a lawnmower that holds a sponge? Should the lid I make have a gasket or vents or is something else necessary.<br /><br />Thanks <br />Rob