Who's Black Compound pad ? Kool stop has made black, salmon and pads with both molded together
as rubber ages it gets harder also..
Magura got kool stop to mold their compounds , like salmon for them , shipped To germany
I have used Magura's black stock pads , then got the Salmon. But I dont ride the bike daily
used KS black & salmon on my cantilever braked Touring bike , of similar age they seem of equal hardness ..
With slip in inserts you probably can find room for spares to bring along... with the tiniest bags..
,,,..