Regardless of what the factory spec is, I would set it up and take it for a short sail through some wave action to weather with the main hard on. Go back to the beach and check the setting and check the bolts. Most likely you will need to re-adjust as it may settle in a bit. Lacking any info on set up I would make sure there is about 3-4 mm upward bend with the mast up and the main sheeted hard on the beach.