We just bought a 2007 Fleetwood Highlander Niagara. This may be a silly question. We put the door in place and attached it to the canvas with the Velcro. What do you do with the space between the door frame and the body of the trailer on the lower portion of the door? I am concerned about flying insects getting in. My husband and I have come up with a few ideas but I thought I'd ask the experts. We would appreciate any suggestions/instruction.