Apparently Shimano has retired the old "techdocs" website, replacing it with the new si.shimano.com site. While I like the new visual design, they've removed some information. It looks like "si" basically drops information about older parts. Want the service info/installation flyer for that clean set of Ultegra 8s bar-end shifters you found on eBay? Nope. The Octalink BB you bought from Niagara last week? Gone.