I hope not Jay, I've been watching this timber dry up and shrink over the last two years or so while I've been working away in Darwin, but will have a closer look and see if any can be drawn out easily. They do "sound" OK and those that are visible between the deadwood appear solid and don't show any signs of waste. I posted some pics of them on another thread a while back:
On this copper one I've scraped off some of the verdigris to get a better look at the condition of it and there didn’t seem to be any wastage of the visible area:Keel bolts "seem" to be a mix of copper and stainless or monel. Those that only run into the deadwood appear to be copper but any forward that also run into the lead appear to be stainless or monel.
the one below is forward of that and also beds into the lead:
those two as they line up:
and here's an old photo and the thread from when I first started to worry about the shrinkage: http://forum.woodenboat.com/showthread.php?t=82015