I had the feeling that the salt display wasn't current. I've found that by moving the switch from OFF to AUTO or SUPER does get it to update--but now that I know where to get the instant reading that's ideal. The display shows 2500 now, instant is 2600, and it's generating chlorine.

I added a 1/2 gallon of muriatic acid and a bunch of water. So now I'm just going to let it run and see where it settles to. I'm also going to take another sample to the salt guy.

Thanks for the info. I must have glazed over the instant reading in the manual... I did find out that the Diag button changes the display to display those other things--but hadn't seen that instant salt reading in there!