Chris:
Your only source may be Suzuki parts. I found out, when chasing a manual for my 01 B12S, Helm Inc. does not publish Suzuki manuals like they do for most all other makers. I did get one on CD to cover my bike from someone on e-Bay, but that version covers only up thru 01. I don't know what differences you may encounter with an 05, but I don't think they'd be major. Most anyone who has a modern computer with a CD burner, if they have one on CD can make you a CD copy for little or nothing. Buying a paper ccy from Suzuki is going to be expensive. I also have the Haynes manual covering my bike. It's not great, but much better than nothing. Haynes books are available from many sources, e-Bay, JCWhitney, Competetion Accessories, and other bike catalog supply houses. Some dealers also stock manuals. I've seen both Haynes and Clymer manuals at the Suzuki Dealership in New Braunfels, TX for example.
Good Hunting..
JR