I glued the plywood stiffener to the underside of the rear hatch of my SW17 hybrid and now it seems to be flattening a little. The plywood wants to return to its original shape, I guess. Should I do anything about it?
The kit comes with thin hatch sill rims. Are they necessary? Are they meant to keep water that gets past the seal from entering the compartment? Is it best to put the seal on the lid or (if I left off the rims) on the sill?