Thanks for the heads up with these BWP. I've deleted the albums which are clearly transcoded so there's no risk of me unwittingly passing them on. But would I be right in saying that 1001 is a genuine FLAC rip? The copies I already had of 1007 and 1008 also appear to be genuine FLACs.
Not sure if you noticed, but track 1 from 1001 is in my series of spectrals I posted earlier. 1001 is also transcoded for sure. 1007 and 1008 do look legit to me, thanks for the heads up. I converted all the albums to V0 long ago once I reckoned the lot were upsampled. Here's track 2 spectral from 1001. You can clearly see the shelf at 16kHz indicating it is at best a variable bitrate mpeg file.

This is one reason why I don't do Soulseek.
I would gently suggest that you reconsider your opinion of soulseek. It has been the most helpful resource for collecting library music for me, 100x moreso than these forums ever have been. LMT is great don't get me wrong, but soulseek is literally the mother load if you're into collecting library music. I thought I had a decent sized collection of regular music and movies etc before, but soulseek basically fills 90% of the gaps left by LMT etc. You're right to assume it's a bit of a crapshoot with transcoded files, etc but it's very much a tiny problem really. Soulseek for sure has a lot of faults, but it is one of the only Internet 1.0 places left with zero moderation and complete peer to peer autonomy. I even met my wife on soulseek 20 years ago, but that was pure luck lol.