FYI, I'm quite happy with my Wavetek 193, which appears to be a 190 with an aux function generator and sweep/modulation option. (And I think the 191 is similar but with a pulse generation section added on.) The base functions are accurate, and the rise time is handy when you need it.
Deoxit may help on the "PARTS" pot. Mine had scratchy pots and switches; a shot of contact cleaner on everything and it's good as new.
Also, hah, I have a V-7A. Not that I ever use it...
Tim