I'm adding my experience re-bedding the genoa track to an old thread as it seemed to be the best place to put it.
I had to do this procedure to fix a leak of brownish liquid into the floor of the head.
In researching what type of sealant to use, I found this outstanding article on using butyl caulk to bed deck hardwarehttp://www.sailnet.com/forums/gear-maintenance/63554-bedding-deck-hardware-butyl-tape.html
I followed the procedure and chamfered each of the holes in the deck. I applied caulk around each of the bolts as he described and also applied caulk to the deck surface between the holes.. Then put the whole track down at once. What I like about his procedure with camfering the holes is that it creates space for the caulk to create sort of an o ring seal around each bolt.
One of the great features of butyl caulk is the cleanup....after I tightened down all the track bolts, I used a knife to trim away the caulk that had squeezed out on the sides of the track; very simple and easy, no mess to clean up.
Next time I need to bed the stanchions, I will use the same process.