I have a problem with holding the razor flat on the hone. at least I think so
If I go from 1k ( King or Nanniwa ) to 3k the bevel is pretty well set
then I go to Coticule or Welsh Slate with slurry , and the bevel gets lost on the way

so I am wondering if I keep the razor not flat enough or so
one failure by going along the edge of the stone and you are off to the beginning or by maybe putting to much emphasis on the edge ???

are there tricks or points of attention that you experienced honers use to make sure not to kill the bevel again during the process ?