When you replace the velcro (if you do) consider adding two more running lengths of it, so when you bring the two sides together you are mating two pieces of velcro- 2 on top of one side and 2 on the bottom of the other side. The running lengths about 2-3 inches apart and overlap them. Does that in any way makes sense! HA! words when I need a diagram
Well just thinking of a method to gaurantee no gaps.