Funny you should mention that Knucklehead.... It took me 3 buckets and an entire 5 minutes to find a leak on the bottom. I saw a big stream of bubbles through there. I must not have pressed and held long enough. I have no idea how those guys do the museum pieces with no bubbles. Years of practice I guess. I'm going to do another pass with the Weld on 3 in that section and in others that look sketchy (with bubbles).