Here's a new run with X=12 craps, as you requested. I'm in crisis mode at the office so the bigger test and run-length analysis will have to wait a bit.

7 L2LLLL W 2L 77WW7 L W7 LL 7WWW X W L 7 L 7WW 2L2 W
LL W L 77W LL W7 LL WW 2 7 L W L W LL WW L 777 LL W
LX W LLL2X2 W LL 77 L W77 L 7 LLLL W L W LX 777 X 7 2
WW 2 W LLL WW XXLLLL 7 LLL 77WWW LL WW L2L2L 77 2 7
L W LL2L W L W7 L 7 L WW77 L2L2L 77W LL W LL W XLL W
L 77 X 77 LX 7 X WWW7 L 7 LLL2 W L 777 LLL W7W7 LLL
77 22 W L W LL 7W L 7 L W LL 7 LL 777 L W LL WW7 LXL
7 2 77777 L2LLLL WW7 L 7 LLL 7W L2 77 L W L 7 2 77 L
7 L 7W 2L 7WWWW 2 777W7 L 7W L2LL 7 L 7W LL 7 LX22 7
LL W LLLLLL2 W7 LL W LL 7W L W7 2L 7 LLL W X 7 L W7WW
L W L 777W7W7 2LLX 77WW 2L 7W LLL 7 LL W 2LLL 7 2 W
2 7 L W7 L WW7 2L 7W 2L 7W L WWWWW LLL 7 2L 7 L 7 2LL
W L 7 L W7 LL WW7 2 W L 7 L WWW77 L 7 L W7 L 77 LLLL
W LL W LL 7W7 L WW L W L 77WWW L2 W L W7 L 777 L W L
7 LLL2 W7WW7 L W LLLLLL 7 LL 7 LX2 7 2LL W7 LL W L
77W LL 77 LLLL 777 L WW7W LL 7W LL W L 7 L W L 7 LLLL
7 LL 7 2 77 LLLXLL 7 L W LLL 7 L W LLL WW7W7W 2 W X
WW 2 WW L 7 LL 7777 L2 W7 L W XL 7 L2 7W LL 7 L2LL2L
7 L WW 2 7 L 7 2L WWWW XLLLL 7 X W 2LL 7 L2LL W

Enjoy,
Jim

P.S. This one played "Luck be a Lady Tonight." Go figure.