Not sure if this will help, but if I'm reading this correctly, it would seem that your ntfs permissions (under security tab) have not cascaded down.
Try this
At the root of the share, right click choose properties, under security tab click the advanced button. Now bottom left click change permissions, at the bottom uncheck Include inheritable permissions from this object's parent when prompted choose the add button. Now make sure that all your users are in there with the permissions you intend, if not select and edit them as you need. Now check the box that says Replace all child object permissions with inheritable permissions from this object.
Hope this helps
Regards
Randy