Got tired of the Velcro on the bottom door seal coming undone and the seal rolling out. Took the doors off and got the fit as tight as I could and clamped the Velcro. Took some #12 machine screws washers and nuts, drilled holes in the canvas through the Velcro and now I don't have to worry about it. Will do the same to any other Velcro's that come loose.