Since you have one razor that works well, you know what "sharp" means. Believe your own skin.

Try giving the Boker a really thorough stropping -- "until your arm gets tired" would be a good number of strokes. If you want to go to the next step, 5 to 10 laps on 0.5 micron CrOxide on a pasted strop might smooth out the edge without destroying SRD's work.

Charles

PS -- previous comments assume the problem is _you_ -- but it might be the razor . . .