I wanted to entirely clean my cassette and after removing the lock-nut I noticed that it was stuck on the hub; I did managed to get it of the hub using a little bit more force but the free hub body is damaged, as I expected the cogs dug into the splines and damaged the freehub body; Now what can I do with this? My rear hub is a dt 340 and the cassette is sram made; which component can I blame ? It's the first time I'm removing this cassette as I got my bike this summer so no Idea how it was installed before... Very frustrating..
that's happen with aluminum driver, it should still be usable. it's preferable to use cassette with carrier (first 6 or 7 gear are in 1 block instead of all separate).
if you don't want that to happen you should choose hub with stainless steel or titanium driver.