Here is onc source. Consider getting more than one in case of loss or damage and also consider getting the .004/.005 gauge too. Use the .004 to double check the exhaust setting. If the .003 goes in, but the .004 doesn't, the it is set right. (the .002/.003 can be used in this way on the intake) As an added bonus, the .005 works for the disk brake adjustment. The brake calls for .006, so leave it a little loose.