Even if you can attach the wedge, the later sidecurtains have rigid lower sides. Mine are the earlier sidecurtains with the wedges that fit into the chromed bases on the doors and these sidecurtains are flexible on the lower half. Often, if it's too hot or too humid in the TR, I can reach out the sliding window, detach the 4 lift-a-dot fasteners that hold the bottom half of my sidecurtains to the door and with my elbow sticking outwards, I can get a lot of cooler fresh air to come in. The later side curtains with the sigid lower panels cannot do this.