One suggestion on getting at the glassed-over nuts genoa track nuts (there are plenty of other good solutions and this is only one): Locate the nut. Mark an approximately 1-1/2 inch circle centered around it with a pencil. Get a rotary hole-cutter bit slightly wider than the outer diameter of the largest of either the socket you intend to use or exactly the diameter of the washer under the nut (if you can see it). Get a piece of all-thread (threaded steel rod) with the right thread and diameter to screw into the cutter bit. Make sure it has the same thread as the hole in the bit - do not use the drill-bit portion of the bit. Put a nut on the all-thread and thread it through the bit to stop against the nut. Make sure the all-thread projects into the inside of the bit just enough to get another nut on the inside. Tighten everything up. Make a couple of marks with a pencil of felt-tipped pen on the outside of the circle-cutter so that you can tell how far you're going to drill into the laminate. Cut the all thread to the length you need to comfortably get at the glassed-over nut. Insert the all-thread into the chuck of your power drill. Carefully drill around the nut just deep enough to clear. You do not want to cut into the glass of the toe rail under the washer. You can now remove the covering and surrounding glass with a 1/4-inch wood chisel, leaving a clean, neat circle. You can also accomplish this removal with a rotary spiral cutter. Use a socket and extension to remove the nut.

Bingo! Nice, clean circle around the exposed screw shank.

After removal and before re-bedding, check for laminate damage in the holes through the toe rail. You can then proceed (if needed) to add epoxy fill around the holes, as discussed in other threads or simply to re-bed the genoa track with, if you desire, base plates below the track.