I made the four angles for the flange of the forward ribs and riveted them into place, then riveted the tibs into place (I'd actually prepped up all the ribs when I accidentally skipped a page ahead a few days ago. I then riveted the forward bulkhead to the angles, and then to the ribs. I put the snap bushings i as called out, but then got stuck on the final instruction, which said rivet HW-00014 to the forward bulkhead. There is no HW 00014 in the inventory list . There is HW 00016, HW00017 and HW-00018, but they are all stainless steel hose claims. I've sent a note to Van's for confirmation.