OK, you've answered my question. I played my copy of Keep On Running on Wirl, and whilst I wouldn't say it played fantastic it's a damn sight better than the Blues Busters on the label, which always seems to play poorly in my experience, so much so that I gave up trying over the last few years to get a decent sounding copy, after buying several which sounded rough. ( I ended up with a nice looking M- copy which sounds no better than any of the others I owned, which made me wonder if Wirl mastered this one from a poor (vinyl?) source rather than og mastertapes.)
I sold a copy of Keep On Running on ebay last year......that one did have a little more background noise thoughout, although not in bad shape it's fair to say it wasn't close to mint.
Anyway, " a bit harsh" could suggest you don't completely disagree.
The SOUL label 45 is also pressed in blue vinyl.