My kit is a Series V Vixen. I have the Kitfox under-seat storage kit, consisting of two black plastic bins and two polycarbonate covers. As advertised, no hardware came with it. This means no lifting handle for the lid and no hinges. Also, no instructions. Does the mounting flange go on top of the seat or under it? Looks like aluminum piano hinge for the lid. What kind of lift handle (if any) is being used?