Well Gary, your hunch was correct, the B-tension was way out, the chain was almost being fed through the rear mech and onto the cassette vertically with virtually no chain wrap!! Now adjusted and the chain feeds from the mech horizontally following the line of the seat stay.
Thanks for taking the time to reply, I have indeed read the full thread and it certainly opened my eyes to a few things.
I am running a full Deore groupset, M4100 11-42 10 speed cassette with HG54 Chain. I never seem to use half of the cassette, just stay in the lower sprockets. The teeth on...
I have a Focus Jam 2 and I am already on my third (yes 3rd) Cassette and chain in only 700 miles. Running a full Deore set up, light use and not a heavy chap either. I have been riding MTB since 1994 and I had NEVER needed to replace a cassette until this new fangled emtb came along!
I always...