Nice bass, I really like the top!
You can get a new knob
here. Instructions are
here.
As for the tuner cover; post a message with a picture to the troubleshooting section of our board. If Mica sees your post, she can tell you where to get a replacement. I don't know whether they have those at the shop or whether you'll need to order it from Gotoh. If they have them at the shop, maybe you can order it at the same time you order the knob.
Edit: Sam addresses the issue of the tuner cover in
this thread.
(Message edited by davehouck on November 11, 2007)