Congrats for the bow! I think my Nemesis was also one of the last ones in Europe - it was the last of Bogensportwelt's stock, anyway. I bought it before Christmas.
I am a little confused about your problem. I use Bohning Blazer vanes with the height of 0.568" and I have plenty of extra vane clearance with the Nemesis. The Killer Vanes you use have a lower profile of only 0.5", but on the other hand, I suppose you use a much thicker arrow. Still, I wouldn't expect to see so little (or lack of) clearance.
Is it correct that it is not a drop-away rest you are using but something like this:
http://www.newarchery.com/products/a...iktune-800-73/ ? Shouldn't you have the cock vane
down, not up with that arrow rest? This would give you some more clearance and also better clearance with the arrow rest.
Does the bow have severe cam lean? This could bring the string closer to the cables. My Nemesis has some, but it does not seem to cause any trouble.
One option would be changing the cable slide to a model that takes the cables farther aside, such as this model:
http://martinarchery.shptron.com/p/cable-slide
At least I think the grooves for the cables are close to the rod in that. I can confirm this later today.