Hi zettel5,
Please share the file, otherwise it would be a guesswork, with suggestion, getting an answer, guessing again, etc.
All I can see is that there are some areas that might be not connected or perhaps N-Gons, see, the guessing starts.
I’m happy to look into it. However, this object looks so simple, I would just built it from scratch and get a nice mesh.
All the best