I would do more than that. Leaky seems can be hard to plug.Tiny leak on the black baffle, could probably live with it, but I'll smoosh some #16 along the seam just to seal it off. Ironically it was the seam that I thought was flat with #4 doing the job, oh well, ugly is the new pretty right?
Did that for obvious gaps, ones where I could slide a piece of paper between the seam, for ones where I can't it's simply a filet weld (yeah I know Weldon 16 is kind of horrible at doing that but whatever it's all internal).I would do more than that. Leaky seems can be hard to plug.
When I make DIY goofs like that, I cut a small 1/4 x 1/4 strip of acrylic, and weld that into the corner.
Makes joint really strong, and seriously stops leaks.