Let’s just chill out, this thing ain’t going to the moon. I didn’t even try that silver bearing solder that I blew up about. The solder I did use I did get to stick when it was perfectly flat over wise it would just run off. With the curves in the tank it wasn’t going to happen for me. The hard silver solder is different and would only melt with mapp gas. Again it didn’t work for me. The rivets are steel and my patches are jb welded and riveted on. I’ll let you know how it goes when I get it back together. Thanks