Yep you got a great one. Head on over to -
http://www.victoriansweatshop.com/?forum=501752
several people on the VSS forum have the GK made Kenmores and you'll get lots of help. It's my favorite forum for sewing machines.
Also, if you're on FB the group Vintage Sewing Machines(Non-Singer) has more manuals than any other group I've seen.
Cari