29-06-2022, 01:59 PM
The wooden piece at the top of the door is an inverted 'L' section as Martin has pointed out. When the window is fully closed the glass nestles in the angle of the section. On my RL saloon I glued a length of 1/4" diameter rubber tube of the type used in science labs along the inside angle of the top rail, before covering it with the trim material. If you do this, when the glass rises to its utmost point it pushes against the trim covered rubber tube and this forces the glass onto the window channel, making it more weathertight and stopping any sloppiness and rattles. I don't know if this is an original detail but it is certainly worth doing.