Hi all, I'm in a pretty bad mood so ill make this to the point... I have fitted the following brand new parts: 18T Surly Cog 22T Blackspire Chainring Surly Singulator Tensioner KMC Kool Chain (3/32) I cannot for the life of me get the chain to stop skipping over the Surly cog. I have: Taken as many links out the chain as possible. Tensioned up and down. Replaced the tensioner with a rear mech. Checked the chain line. Checked the tensioner alignment. Checked my hub (CK) I really don't know what else to try, its certainly very frustrating. I cannot stop the chain riding up over the teeth of the Surly sprocket. Dave