I just purchased X-Men L.E. I am learning about Stacking modes/Muti-balls but need more practice. My question is how are you X-Men owners setting up your Feature Adjustments. In New code there are options That are all set to No/off by factory default. I called and asked STERN TECH Support about feature adjustment and they did not have an answer for me. So am asking Pinside Pinheads. This is what I have turned On /enabled. Feature # 8. I enabled X-Men stackable modes. Feature # 9 I enabled X-Men+ Villains stack. # 10 is confusing to me .Worded like feature #9 but in reverse . Feature # 10 I enabled Villain + X-Men stack. The next feature I left at factory default No/off.# 11 off Mystery progression to NC mode. What does it mean and should I turn ON Feature # 11. Hope to get some clear answers and maybe a short explanation as to what Feature you enabled and why. I hope to understand Stacking and setting my machine for best game play. Thanks for your input. Rob