Quote Originally Posted by OwenB View Post
... Manufacturers show as Please select and the first two manufacturer's names - no drop-down.
...
In Admin > Configuration > Maximum Values > Manufacturers List - Scroll Box Size/Style

it says: Number of manufacturers names to be displayed in the scroll box window. Setting this to 1 or 0 will display a dropdown list.

Changing that should give you your dropdown.

Edit: that's on ZC v1.56c, I assume there's something similar in ZC v1.57b