Hi I just removed seats and rear interior panels and realized that the quarter window access panels under the rear interior panels are missing. I have a convertible with power windows. I am ready to install Dynamat before I put in new carpet and found the access covers were missing, so it is useless to put the Dynamat on the interior quarter panel without the access cover. During my research I found flat covers and bubble covers. The flat covers will not fit because the power window motor protrudes slightly from the opening. Does anyone know if the bubble covers are proper for a 1955 with power windows? Also, is the cover the same for 55-57? Any help is appreciated, thanks in advance.