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fredtc-
Exact same 9spd kmc chain, @TooTallTim could be the chain ring but I rarely use compared to the big ring to be honest. The skipping is under load and at the same point each crank rotation which makes me think ramps/pins on the big ring might be catching but chain line hasn't changed. Will keep investingating.
nejib
I have a 2x1 set up with a ss chain tensioner at the back. I just replaced the chain and it's now skipping on the small front ring like it's trying to shift up. Wasn't doing this with the old chain and it doesn't skip/jump on the big ring. Haven't changed chainline or anything else. I can't see anything obvious causing this. Any thoughts on troubleshooting? Thanks