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I have a carb that has been converted to alcohol.It has 160 and 158 mainjets. These jets are stainless steel and thread into standard metering blocks.I ordered a jet kit from Jegs and they are the wrong 5/16-32 thread.I've tried a couple of race carb manufacturers and havent had any luck,Does anyone know who makes the jets I have?I really need to jet down and dont want to change to the larger thread metering blocks. Thanks for any insight on this, Eddie