Looks to me like max draft is too far back at the bottom of the sail and too far forward towards the top.

At the second from top batten the leach seems to hook inwards. I would try a stiffer batten.

Try sanding the bottom batten to encourage some bend at max draft. Not much sanding. The batten also doesn't exit the batten holder on the luff squarely. Loose?

Looks like it needs more downhaul. Some more pics with increasing amounts of downhaul and mainsheet tension would be interesting. Force your rotation to your normal upwind setting. Might be all your sail needs as there is not much mast bend. Position your boat on a beat when you take the pics, need some wind too, hold the boat down. <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />

Marking your sail and moving your telltales takes the guesswork out of setting your sail up.

Strangely I have some pictures of mainsails from the same angle <img src="http://www.catsailor.com/forums/images/graemlins/smirk.gif" alt="" /> I will find a real ugly one and we can pick it to bits.

Darryn
Mozzie
1782