Okay so this could be a simple fix or could be more tinkering required.
I swapped over to 1x10 today, Hope IBR & guide, plus new KMC chain with magic link( i think thats what its called)
The chain is skipping under pressure in the 11 & 13 gears.
The bike is just under 6 months old and was only at .75 on the chain checker tool.
Is a worn cassette causing this skipping/slipping or possibly something else?
I'm guessing that I'll need a new cassette, just wanted a 2nd opinion as to what might be causing it.
If so can somebody recommend me a 10 speed Shimano one please