Does any know the size of the vent tubes on the carb for the 2000 YZ-250 two stroke? Mine are brittle and cracked now and need replaced. I am pretty sure the vent tubes are 1/8 inch id, but I don't know the standard size of the tube that leads down from the fuel petcock to the carburetor. The fellow I bought the bike from also has an inline fuel filter on that line. Thanks.