ok.. so i went back to the referee after changing my exh. mani.. i passed the visual.. now the tailpipe sniffer got me... my HC level measured at 276 and the max allowed is 100 on the idle test.. now to my question.. what would cause that to be so high on the idle test??.. but not on the 2500 rpm test.. someone please have an answer for me.. i'm about to pull out the little bit of hair that i have left..