Hello Eric Wallace,
1. Check whether you there is permissions inheritance.
2. When you are logged in go to Permissions tab of this page and change what is set by PermissionSet control.
3. Make sure that the user you use does not belong to administrators role or role with permission="Unrestricted"
To set permissions for a given role you need to cast the page to ISecured object and then call SetPermissions method
ISecured secured = page
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