I decided to jump in and try to build my own tank. My problem is that when placing the panels the silicone began to dry (skin?) by the time I got to the last panel. It all went together fine, but I'm worried that it did not create a good seal, what with the silicone skinning. Also, I may have put down too large of a bead because it squirt out quite a bit when I placed the panels and looks quite ugly. Do I need to do it over again? Can I just cut out the silicone on the inside after it cures and run a new bead?