The fairing fit pretty good when I made it, but now the top edge seems pulled away from the fin. Darn. You can see some puckering in photos below. From standing on the side it looks okay. But if you climb up on top you can see the gaps. Good for now. Build on. Someday I may rework this a little. I might just widen the holes so fairing can float a little. And I could try using the tinnamin washers which would help.