Well, Jon. I've got a couple possibilities.

1) the computer I'm downloading to and the Tivo I'm downloading from are both connected to my network wirelessly, and appear to be averaging about 11mbps, which should still be faster than it is
2) I uninstalled Tytools and went entirely with TyStudio. As far as I can see, it's much better. I downloaded a ".ty" file from the Tivo, and it got all of it, although I think it was still pretty slow.

So, for now I'd suggest TyStudio. It's definitely a step up from that TyTools installation instructions page, because it adds it's self to the start up process, instead of having to telnet in all the time and starting the program up. There's also an indexing process to speed up editing directly on the Tivo.