I have two factory hatches that are square that do not have the hardware to keep them open. The lid frame has the threaded holes to attached the hardware. It is a 78 H30 of which I have owned for a little over a month now. I would like to know of any places to acquire the hardware. I'm sure I can make something but things like this are usually cheaper to buy that to fabricate. I have fixed a leaking fresh tank and replaced the hose and tank for the black water. Next is a mahogany cockpit floor grate. thanks.