very mild 360 build.

we washed it with soap and water then wiped with wd40 and clean rags until they came out clean.. amazing how much dirt stays in there. it will get wiped down again before assembly.
It sure is, I couldn't believe how much dirt and grime would be on those cloths, if I remember correctly I used 3 cloths per bore. The main thing is to use lint free towels, rags etc, if not those fine particles will stay in the bores. I don't think it's possible to be to clean upon assembly.