Step 6:

Picture of
The painter's tape pulled away cleanly from the washer and Sugru leaving me with an incredibly smooth Sugru covered screw. What's left on this particular car is a slightly convex mount that this thing has to match up fairly well to. I put the screw back into the drill and held an exacto knife at an angle so that I cut a matching concave scoop out of the cured Sugru. Worked like a charm!