Proximity Search by Postal Code & Views Attachment

Hi all,
I've run into an issue trying to create a view which allows for users to perform a postal code proximity search. I've set up a page view which works fine (i.e. using an exposed filter, a user to enter a postal code and distance and have all nodes within that proximity show up). With this, I wanted to add a views attachment to that page view. My goal was to have the page view show a google map of all the locations and then have the attachment below list all of the information for the specific nodes in a grid format.

However, when I add the views attachment and have the attachment inherit the arguments and filters, the exposed filter disappears for users to enter a postal code on the views page - users can still enter the distance though... If I change it so the views attachment doesn't inherit the filters, it works fine (but there are two sets of filters which I'd like to avoid).

Any ideas?