Hi, Jeoffrey.
2 things I see which don't look right to me and 1 which I am just wondering about.
1. The battens seem to have negative rise, ie, lower at the leech than at the luff.
Did you design the sail with positive rise in the battens? If so, then for starters the sail isn't hoisting correctly
And/or, possibly you may have the sail hoisted too tightly, putting those diagonal stretch lines into the panels.
2. It may be an optical illusion, but the max camber point on the "lense" either side of each batten, seems to have the max camber point on the upper, further back than on the lense below the batten.
This makes me wonder again if you have put the jiblets on upside down, especially if you designed the sail with positive rise. ie, with the batten rising slightly towards the rear.
3. How tightly have you tightened the panels along the battens, fore and aft. Again if they are overtaut, that would be inclined to induce diagonal stress across the panel.
So, I'd firstly slacken the sail slightly to see if that makes an improvement.
Make sure the battens are getting any rise that you designed in.
If that doesn't cure it.
Then the bit you dont want to do. Unsew the top panel at the jiblet and reverse the jiblets to see if you put them on upside down.
An easy mistake to make.