I have the software from The Las Vegas Advisor as well. Use it for practice and to see how well I'm doing. Can pretty consistently play at 99.5% of optimum strategy, which just about makes it a break even situation on Double Bonus 10/7. I find that in most cases, the 1/2% is just dumb mistakes and allowing your attention to wander. Dancer's encouragement to "slow down" is the best advice I can give to someone trying to play these games perfectly.