Send it to Century. They should take care of it.
That said, it may be worth checking out the guide. In the conversion of my Saiga, I found that it had the occasional problem with HP rounds, just smacking into the feed ramp and not having the curve to force themselves up. So I nudged the first round against it, made a mark, removed that round, and did the same with the second--so I had marks from each side of the stack. Then used a half-round file to ramp it down.
Fed flawlessly since.
Truth be told, if that's the problem, it's an easy fix. Knowing Century, it could be that the mag well is weird or the receiver is out of spec. Send it to them to fix.