have a lil annoying noise

i recently installed a weber 34/34,intake and all new hoses ,after installing she fired up and seems to ran 100% better ,im very pleased with it .but i hear this tiny lil high pitched noise ,its very hard to hear ,but its one of those annoying sounds that you need to rid off .i sprayed carb cleaner around plates ,and no change,checked all hoses ,and am just curious ,if anyone has had this experience or if its the carb sound let me know thanks