Someone previously had tried to get around the problem of the differing floor heights by placing large washers over the pin with a view to lifting the shoe/door, so I presume it would close. Neither was it closing when we arrived nor was it centering because of these washers. As I have previously stated this method makes the shoe/door loose on the tapered pin and will over time damage the female fitting in the brass shoe.
Please, please carpet fitters/floor layers do not place washers over the pin, contact us instead.