Bosch WAQ24461GB/15 Can’t find a drum bearing kit

Horrendous noise on the spin cycle. I have stripped it down to the tub and will split it next. I think it’s the drum bearings. Usual indications, bits of plastic sheared off from the plastic tub due to excessive drum movement. Faster the spin, worse the noise. Hope it’s not the spider. No other problems found on the strip down and nothing stuck between drum and tub. My problem is that I can’t find a drum bearing kit for my model anywhere on the internet. I am now starting to think that perhaps it’s not possible to replace these bearings without buying a new tub and drum kit for £220, which will not be economical. Do some Bosh models not allow replacement of Drum bearings?