I found a saw shop that said they have a box somewhere that has just the diaphragms in it. When they do a carb now they use a full rebuild kit and haven't used just the diaphragms for quite some time.I'll have to go there and see what they have.I told them I work mostly with WA and WT carbs,but on Ebay in their listings they list more letters of carbs that that diaphragm will fit. Do diaphragms that are still sealed in their original plastic go bad after time ?