How do mate
if you mean the s/c scratch is wrong ,I rang Krend up and they said ifs fine and covered by them.
just to say as well,I did one last year, new block house, scratched in s/c and topped with ivory I think,anyhow when I did it the bloke came back off hols and it was the wrong colour, went ballistic,I had a few bags left over so showed him the bag,which he ordered by the way, he insisted it was the right name but not the colour he chose.
rep came from Krend, asked about the backing,I told him he said that's your problem then,I just said b*ll***s,if you one coat it over block it would show every s/c joint up as a different colour would it not?
anyway he went away and it turned out loads had come back and it had been bagged up wrong at source,I did kinda **** it though,over 100m2