I said I'd let you guys know about the rubber piece I dug out of both channels. I had to dig it out with pliers and never got it all. This photos shows it probably was injected through the hole but I don't know the reason for it. Regardless, I'm done worrying about it.
http://i77.photobucket.com/albums/j47/k ... CN2943.jpg
This shows how bad the left channel was.
http://i77.photobucket.com/albums/j47/k ... CN2941.jpg
These show the rust holes in the rear and my attempt at patching.
http://i77.photobucket.com/albums/j47/k ... 2947-1.jpg
http://i77.photobucket.com/albums/j47/k ... CN2963.jpg
