Bought some Ironman sprockets and DID X-ring chain from the TT store to replace the worn out stockers. I went to replace the countershaft sprocket and noticed that the stock one has "shoulders" on either side of the teeth. The overall thickness is .53 inches measured across the shoulders, but the toothed section measures .22 inches. The ironman replacement measures .22 inches as well but does not have the shoulders (looks like a "normal" sprocket). Any reason why the "normal" thickness ironman would cause a problem? Are the "shoulders" required for running the DID X-ring chain? Did a search and could not find any info on the subject. Any thoughts would be appreciated.