Hey guys, I'm getting everything together for my 20L and I've got a question. I'm doing an overflow like this one
[img[http://i434.photobucket.com/albums/qq68/Basilesim/65%20Montage/Photo023.jpg[/img]
And I was going to use a bulk head, but once it is in place, I won't be able to remove it as you can see. I was looking at MS and found some uniseals. I've never used them before. Do they tend to leak or slip? Would they work okaying in this setup?