Thanks all for the good explanations. I let the tires wear without getting an alignment as they were aging out and I waited till now to get the alignment with the new front tires.
It drove ok for our short trips, but I wanted to get it right after reading all those alignment posts for Cs. Seems like the Castor numbers are ok; it drives straight.
Old tires gone so no photo. They had tread wear mostly on one side that kept getting worse. Still had tread, so was able to wait till they aged out.
Here are the other numbers in case they mean anything to those who know.
Camber Left : initial 1.1 (spec 0.5 - 0.5) final 1.1 degree
Camber Right: initial 0.4 (spec 0.5-0.5) final 1.0
Toe Left: initial 5/16" (spec -1.32" min to 1/16" max) final 0"
Toe Right: initial 5/16" (spec -1/32 to 1/16" ) final 1/32"
Toe Total" initial 5/8" (spec -3/32" to 5/32" ) final 1/32"
They did centre the steering wheel too, which I asked for. It drove straight, no pulling, but the wheel was to the left- made me crazy. It is fixed now.
I have no idea why they list those specs but some final numbers are not to spec, but I believe from past experience that garage guy knows his stuff, so no worries.
Whatever it is now, that's what it will be while the old C runs out its clock. So far so good! :)