Chainplates done. So now I have all of the parts. Unfortunately, the epoxy to strengthen the bulkhead takes a week to get to full strength. Lots of wood left, so mass quantities of Get Rot used to beef up the bulkhead. Drilled in a staircase fashion to fill all of the voids. Will have first look tomorrow. Core actually better than I feared. Strongly suggest that longer chainplates should be considered. 1800 lbs over 6 bolts just looks like trouble.