Baby H did indeed have the same problem.
The stanchion bases are countersunk machine screws so you need to get to the underside of the deck and undo the nut from the screw rather than try and undo the screw from the nut, the toe rail uses self tapping screws so will come out with the right size driver head, some brute force and plenty of down pressure. I think from memory they are pozidriv but can’t remember the size.
As Rick said, Captain Tolleys Creeping Crack Cure was the solution, but I did spend time making sure the screws were fitted correctly. In fact I had to replace a couple of stanchion base screws as the threads had been damaged during installation in the factory and the nuts wouldn’t fully tighten.
I have a load of CTCCC left on the boat if you want to try it, it does leave a mark on the gelcoat unless you clean it up quick, but a quick wipe over with white spirit sorted it out.
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