Hey I have a 8x4x4 stainless steel tank. It was tig welded. There are 3 spots that are pin hole sized that's leaking on the bottom seam. Tried using silicone lining the entire inside seams then let it cure for 2 days and filled it up with the same leaks. Really don't want to tear everything down to take it to a guy that can re weld it. Any suggestions on a "Fix" to stop the leak besides the silicone? Thanks!