Took some time to go back and work on the fiberglass tips of the vertical stabilizer and rudder. Used the Evercoat 416 which is a wonderfull fill product that sands easily. I am much happier with how the transition from aluminum to fiberglass is coming out. Of note, the evercoat 416 says 5 minutes working time at 80 degrees, but at 95 degrees that is reduced to about 40 seconds from the start of mixing.