I use a 3/4" nock height and 8 to 8 1/4" brace on both my Hunters. 30" draw, too.
I started low with the nock and worked my way up over many months. I had similar issues with hitting the outside of the shelf, but the high nock and a consistent grip took care of it.
I think the high nock point might be the nature of the beast, though an inconsistent grip (too high or low) can make you think your nock point is off, too, so it doesn't hurt to check that either.
For me personally, with the Hunter, the arrow doesn't necessarily leave the bow like it looks like it should, as an arrow perfectly 90-degrees to the string. I use a medium-high grip, which, for lack of better terms, simply tilts the shelf toward me more at full draw, necessitating a higher nock point for the arrow to remain high enough to cleanly clear the shelf.
I'll stop there, before I spread any misinformation.