Aha!
The column width property on the field editor can work in “fixed with” form. If you write your property like “200px” instead of “25%” it will interpret appropriately. The columns from your image are pretty narrow.
Two other ideas:
1. Set your field editor to “Field Layout” property to be “lable above field”
2. In the custom lable fields just put a space. This will make them seem to disappear.
I think this will work well for you.
