Well, finally! Developed some 4x5 in PMK today! Pretty cool stuff, amazing how dark that used dev gets! Used Gordon's times: 70F, 14min..at his ei of 260. I shoot at 160. Anyway, developed 6, one perfect, one underexposed and thin, and the others are too dark. It seems maybe I developing too long, but am not sure. A couple quesions?

1 is it normal to have the clear film base on the edges to be stained or clear??
And 2. Should I decr. my time to say 12min since 4/6 were a bit too much?

thanks for any help!