Hello , I just bought an 02 Looks like very low miles, maybe original front tire. . It has been uncorked by the PO`s . new carb boot, 68s , 175 jets , stock tip drilled , air box opened up. I have cleaned the carb but will do it again . It wont idle at all, it is very hard to start, and it is real jerky . What is this brass thing next to the pilot jet? It looks like a jet with no screwdriver slot. I don`t have one . Will it make it run way rich ? P.S. It does have a ton of midrange power, but no low end at all.