I had stored my manuals for my Crack/Speedball and my Eros on a computer and then promptly lost the CDs; the hard drive crashed and when I restored the backup some of the .PDF's were corrupted, unreadable. How / where do I get copies of the schematics for my gear? The gear is all working, but right now I am thinking about building a 6SN7 line stage from scratch and would like to look at my Bottlehead schematics for CSS inspiration.