Thanks everyone. I see now, the shift does override. I like the idea of slowing down the jog, then toggling, but the mouse in my setup isn't the best. I started with in on a shelf with my KB, but it was stressing my wrist. So I bought a wireless mouse, then just set it on the table to use it, then move it to the side when I start the program. So I do KB commands as much as possible. I'll probably live with the fast jog on the shift. It worked pretty well today. I ran the machine a lot.
The question about feedrate, jog and rapid is correct, I was getting them mixed up. I thin the feedrate is set in the g-code. It would be nice to dial the rapid down. Is that a separate adjustment? Its only moving down a couple inches, so there is no rush.