Make sure it is shipped Fedex/UPS/DHL with a tracking
number, and is labeled "PARTS FOR FOREIGN YACHT IN TRANSIT" then start calling the local office. They'll get you sorted out. Its a whole lot easier in Trinidad, where the Fedex/UPS/DHL guys know to deliver it to the customs
office in Chagaramas, and the customs guys there understand no duty for yachts in transit. I would even think about taking the ferry
over to pick it up, because it may end up in Chagaramas anyway.