I took off all the old silicone, just to be safe. If one factory seam fails, then I figure they're all probably bad, so better just to redo it right the first time. It'd be a real witch to just redo part of it, set it up, and have it fail in your living room, huh?
that sucks about the tank....
I would've taken more pics of the frame construction, but I forgot to take my camera with me to my dads house, where we did most of the work. Just for reference, I used the 2"x4"x96" Top Choice Studs from Lowes. They are the best 2x4's they carry. Very straight, few chipped edges or cracks, and they're mostly identical dimensions.