What will go wrong? Sounds like famous last words.
If the sweep pattern is double what it SHOULD be, then it is not ok. If you've read the tech articles and you don't get it, that's ok. A lot of people don't. But, the lack of understanding is were a question like "What would go wrong" comes from. That doesn't mean you're not intelligent. It just means the light bulb hasn't turned on yet. When it does, you will know why it is a such a problem, and you wouldn't think of building another engine without making it right.