I forgot to mention one little update I had to do on the Premier over the winter. I don't know if I caused the problem with outside kitchen door because I didn't latch it properly, or if it has to do with the dampness up here in the Pacific Northwest, but I noticed that after sitting through December and January that the center locking latch no longer worked because the door was slightly bowed. The latch itself was no longer long enough to catch on the frame. The ones on the sides are fine. I changed the center one to a longer latch and now it locks properly again. (Even though I changed the lock cylinder so it's no longer the 751, I'm still looking for a more secure lock for that door.)
I bought some Combi-cam locks to put on the front storage doors, but am debating using them because it's harder to use them at night in the dark.