You may be right on both counts. Looking any some '71 CC F12s yesterday on Heritage yields a mix bag - some with strong and some with weak 'Liberties'. Si I guess overall F12 is correct on this one. The '78 CC, I think I would agree with you. Rarity grade bump. Overall I'm happy, though, I paid less than VG8 money (per Numismedia) for each of these.
I don't know, C-B-D. Weren't you the guy who bought a whole bucht of FE cents for a small fraction of what they were worth?