[theastronaut]

The curved areas around the fender mounts can't be blocked like the flat edges. You'll have to do this with the fat part of your thumb, going slow and using guidecoat to show exactly where you're sanding and how far into the flat area you're shaping the radius of the edge.









Once all of the edge have been sanded smooth, shoot guidecoat over the entire flat area and block off the guidecoat with 180 grit. This will show how evenly the radius of the edges extend into the flat area.