3 DE blades to clean up the dome? You must have steel wool growing out of your nugget. If I let my hair go for a whole week, I sometimes clipper it down before getting the straight razor after it. I suspect this minimizes wear and tear on my edges and a couple straight razor passes afterwards usually puts me in fine trim. A good stropping of 50 laps or so on either side of the strop normally puts the razor in good shape for the follow up face shave but I typically do not strop between passes on my dome.