Search:

yes as soon as you even up the spine edge should be even too.then you hone it as normal blade.

Magic marker test is for the edge to make sure your blade's edge is touching the stone.
you watch the spine and see how much spine wear you have. IN your case middle of your blades spine wear at the...

Have been mention already it is frown blade.
how to fix.
Easiest way(in my mind) is.
tape spine of the blade exact size of the smallest portion of the edge?
what i mean.
you will need to tape...

Try to post on honing section in that case you will get more help.
what you are describing is a smile face blade.
it will a lot easier if we see pictures of the blade . Check the spine of the blade...