It's not the nocks. Easton and Beman are one company. Those uni-nocks fit literally almost all carbon arrows as most of the common shafts shot are the same size.

I'll ask if you use a loop on your string or just hook a release to the string. In either case what is happening is that yu are experiencing nock pinch which puts pressure on the underside of the nock, lifting the arrow as the bow is drawn.

If you are using a loop then you need to move the lower knot just a bit, maybe 1/8" or even less. If you are shooting off the string then you should probably install (or have installed) an eliminator button that will be positioned under the nock when you draw. This creates a cushion to alleviate the nock pinch.

In a pinch, and temporarily you can just clamp a brass nockset about 1/8" under the nock to keep the release from pushing the nock up.

The shorter the bow (axle to axle) and the longer the draw length the more severe the pinch can be.