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KevinD002 said..
What about tune ups? Every 5 uses?
Shouldn't need to do them that regularly. The top battens I wouldn't touch for the rest of the life of the sail after you've given them 1-2 tiny turns to get the bulk of the wrinkles out. The main ones that might need tuning are the Reflex battens with the red clip.
Cyril makes a good point that you also need tension the outside tensioner at the edge of the sail, this doesn't really put any tension on the batten itself, but it does flatten the crinkle the sail gets from the Reflex system.
That being said I probably only put my Reflex tensioners out one extra step about once every 3 months with regular sailing.