Stiff Indesit drum making metallic scraping noise

Good afternoon,

I have an Indesit IWME127 integrated washing machine that’s only just over two years old. The drum became very stiff to turn, and makes a loud metallic scraping noise when you try to do so by hand.

I have watched various videos on this and it seems that, in order of probability, it could be:

(a) a foreign object physically jamming the drum;

(b) a drum bearing fault; or even

(c) a damaged spider that holds the drum bearing (I had this problem before on a much older example of a similar model).

Would I be able to tell which is the case by removing the back? In that case, as it’s a fitted (integrated) type and I haven’t had it out yet, what type of heads do the securing screws have - Philips, Pozi, or anything uncommon?

Assuming no obvious signs of damage are visible, how would I be able to check whether it’s down to a foreign object jam or the drum bearing? Can anyone point me to an exploded diagram, perhaps? Any tips for removing offending foreign objects? If anyone has had a previous experience, I would greatly appreciate your advice.

Many thanks,

Alec.