In most cases, you can make adjustments to a bow through its nock point, shelf material, and strike plate to make it shoot to your "instinctual" point, or natural sight picture. Also, be sure your bow's brace height is correct. That can also wreak havoc of your accuracy.
If you are consistently shooting high, try lowering your brace height. If shooting to the right (right handed shooter), build out your strike plate a little at a time. Same shooter shooting left, use thinner strike plate or a "softer" material. And so on...
A nice video that shows how to do this is Rick Welch's "Accuracy Factory." There are probably others, and would not be surprised if a You Tube search gave some good tips, as well.
Good luck getting things dialed in. In most, most cases, it is the set up or the shooter's form (back tension?) giving erratic results.
It is possible to find a faulty bow, but I believe it is very rare to do so from anyone who has successfully built bows professionally.
Final thought... do all you can to make sure the bow set up is correct, and talk to the bowyer if you are still having trouble. Most of them really care about people doing well with the bows they slaved to build!