My M1008 has troop seats in the bed, but some of the pins that hold them in the up position are missing. They appear to be stainless steel, with an attached "lanyard" to keep them from getting lost. Is there a source of these out there somewhere? I need five. The hardware store has similar pins in "Zinc steel" which is just plain steel with a flashing of zinc. The hardware store guy said they rust up fairly quick. Thanks for any tips. H.