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use maas should be good enough for cleaning.

I understand you may have doubts to my words but it is in fact will be better send it out.
After getting it back check the edge and see how it shaves.
this will be the best option.
Then you can...

nice razor.
you will need to clean up that blade and send to someone else for honing.
there is a lot reason for it.
at least you will know how sharp your blade suppose to be.
about the stones....