My Bimini has a stainless steel screw with a plastic head where it attaches to the either side of the boat. This so you can screw it in and our by hand. I'd like to replace mine. Are they sold somewhere in the states? I checked at sailboatowners.com and they told me they don't sell the bimini for the H26. Sure I can find a normal screw and use a screw driver or maybe weld a bigger head to these screw placements but I thought I would check here.