....Denny, I KNEW this would happen!!! I asked this question, saw you were on line & as I was replying to your post "To My Fellow Members" I thought; "Denny is going to answer my question BEFORE I can even reply"!!! THANKS AGAIN DENNY!!! Ok, so the jets that are $7 for two are the same ones that are $15 for 22.... I'm changing from size 71/83 to 70/82 because my engine is running rich {I have the idle set lean, if anything}. I was looking over my Dyno sheets & noticed that there was really no difference in HP & TQ between the 71/83 & the 70/82's.... I ran out of dyno time so I just said to leave the bigger ones in. You know, my thinking was; MORE is better! Just one more question then; 1) Do I have to use the drill bit to check the jet size if I know what size jets are in it now??? I guess what I'm saying is; So all size 81 jets have the same size hole size??? Example is; Jeg's has a size 81 jet with a size .093" hole. Do ALL size 81 jets have a size .093" hole???? whew, Bill