Now you guys keep saying to "tack" it around the edges. Does this mean melt the crap out of it? Use glue? The nice article on here kept saying to tack it, but didn't say what that meant. As for not needing a hatch, I've got to remove the old blind nuts, fill in their holes, then put some thin plywood behind the original firewall to put the new blind nuts into. The new and original blind nut holes overlap just enough to make it a pain... - Joe