LOL don’t beat yourself up over the thread title.

They are being too grumpy, it got you the needed interest from others in your problem. 🙂

And just after my post I went back into the forum and saw an update to bruders’ thread.

There really are things in life to get grumpy about, but this wasn’t one of them.

[/contritegrumpygit]

the cassette could have been relatively new and a cheap chain was used, or not maintained, and ‘stretched’ quickly, so trashing it.

Some SRAM cassettes seem to wear quickly as well.

Hence my suggestion of the 3 chain trick.

Replace cassette. Been there done that – twice now. Hah.