Flight Plan Equiment Codes?

A friend just asked me what code to file with his KNS-80 RNAV. I told him that
I thought it was /I but that I usually filed /A with a KNS-80 because I didn't
want ATC to surprise me with an RNAV approach or some kind of weird RNAV
routing. (I don't use a KNS-80 often enough to be really comfortable with it.)

Then we found:

http://www.faa.gov/NTAP/NTAP06AUG31/gen05003.htm

Which is a new chart "Effective September 1, 2005" and it looks like good old
slant alpha is gone and I should now be filing slant uniform in a vanilla
airplane w. just mode c and dme. Is that right? Did the codes change while I
wasn't looking?