Wow... every two years is good!
The forestay and bridles are next... The furler should last near the life of the boat... maybe some maintenance to keep the furler operating properly, but failure is extremely rare. The bridle tangs would show wear, so keep an eye on them and other attachment hardware.
I suspect that the mast tang may have worn for either prolonged mast up storage or mooring? Constant movement of the parts will do that. Restrain the mast from rotation during storage.
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