Bulkhead/genoa screws/chainplate fixes
A few questions. Are they screws or through bolts on the Gen track? What is the evidence of leaks? Same questions on the chainplates.
I would remove both Gen tracks and the chainplates examine for water intrusion at every hole in the deck. Only then would I be comfortable with a low moisture reading.
As far as the bulkhead, remove and repair BUT also find out what is causing the water intrusion and repair it.
Best of luck. JEF