Noisy chain

Recently fitted a KMC 10sp Chain, and it is noisy as hell.
Checked the length off the old one, tried different cassettes etc, but can't figure it..
Help please..!
Checked the length off the old one, tried different cassettes etc, but can't figure it..
Help please..!
63 miles to go and the break is up the road
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Would it be a fussy over being used with a not new cassette..?
Don't think it is slipping, just seems to be very notchy and noisy...
Pinarello F8 with sram etap
The cassettes aren't that old, and changed the chain on my other bike at the same time and not had any problems, so a bit flumexed..!
Shimano 10sp Ultergra gears on a tt bike.