Well, I will repeat my question from the F16 forum about sail stalling here:
So far, I understood that I can adjust the twist of the main with pre-bend. But what is the best light wind twist? Should my main stall at the top of the mast/sail, in the middle or just above the boom? I am used that pin head sails always stall at the top first, however the square top sail which I have now stalls above the boom first. Do I still have to much twist?

Cheers,

Klaus