Sweet Willy is in the garage for the winter and I'm bored, waiting to go south on the first. Decided the cracked windshield rubber is unsightly. Used two part plastic bumper repair material, it is harder than silicone and easier to finish. Of course the rubber is fairly hard. Cleaned and masked the area. Be sure to overfill. Between 80 grit to shape and 400 to finish and very careful use of Exacto knife it came out quite well. The filler comes out dark grey after sanding. A bit of black shoe polish took care of that. Finished picture of R. side shown.