I started riveting the internal ribs of the second tank. I'm getting faster. It takes about 75 minutes to rivet one rib. I mix up 55 grams of Proseal and I have some left when I'm done. I'm reusing the same clecoes and wiping them with MEK after use and they seem to be staying pretty functional. I sanded down one of the popcycle sticks to a better point for makig filets between rib flange and skin and you can see in the photo my fillets are better.