I'm feeling very dumb and in need of assistance. I have been trying to access the Amp Buyers Guide. When I search on "buyers guide" in the amp forum, I get a nice list that includes the thread(s) I'm looking for, with attachment icons (the little paper clip) which presumably is the guide. But once I open the thread, I can't find any indication of where or how to open the attachment (in fact, I can't find any indication of the attachment at all). What am I missing?