I also have a problem with 10% edges. Without revealing too much detail, can you at least break down the elements that add up to a 10% edge? Let me give you an example that isn't quite 10%:
Return on the game 99.96%
Free play bonus 1.00%
Comp bonus 0.25%
this doesn't give away your game -- but it will let us know how you are figuring your 10% edge. thanks