IMHO, the surveyor should have at least taken you aside and said "lookie here bub, this(these) chainplates are leaking, and heres the resultant damage...(the core surrounding the plates may be wet, it may have seeped "a fer piece", so you've got deck repair to do as well, hope you're good with 'glass) To repair the plate leaks, you'll have to yank these doo-hickies(highly techinical term), pictures...
http://www.sailboatowners.com/forums...06310212941.84 and replace the wood that they're attached to...rebed the chainplates with xyz's fantastic chainplate sealing goop, re-tention (gawd, is that a word?) the rigging, and hope for the best. Or pay the yard about 4k to have it done. "