Here is a re worked 38 to 40 fin. What a bunch of work! I am glad that I got them done after two days of grinding, bending and sanding.
Here is what I started with. You can see where the new rivets are installed and where the fin needs to be cut. Check out the seam on top of the fin anc compare it to the picture above, you can see that it needs to be cut down and re welded. Stuff like this isn't really important to 99 percent of the people in the world, but it is to me.