I understand what you are running into with V17. V18 and even V19, when machining profiles, you need to do an offset that is half the size of your tool on the inside or outside of the profile depending on the cut. In the future, we will add automatic cutter compensation. It's on the list, but for now this is how you would do it. V19 has basically the same 4th axis operations as V18 which was updated over V17. It isn't setup for solids however. I would recommend at least an upgrade to V18 for the 4th axis though (I'm not a salesguy). There should be an easy 4th axis training lesson in the Video Professor series or in the manual.