[quote=davefarmer]There should indeed be a glassed in or bonded metal backing plate inside the hull. My preference would be to drill and tap to the next larger fastener size, or as gahmby suggests, keep going up in size til the screws bite solidly. You may need to drill out the chain plate to accept the larger fasteners. When doing the drilling and tapping, you should see metal shavings, if you don't, then you'll need to go inside to reattach the backing plate. Use loctite on the threads of the new fasteners.
Dave[/quote]
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