Thanks for the comments everyone. Unfortunately I won't be getting to the lake this weekend. Our new crew is unable to make it out for practice, and the wind is gusting to 30. Not a good day for playing around with various sails and trim on a light boat.
Besides I have a hole to patch in my boat.
Also, get the sailmaker out on the boat.
I think some of you are confusing "guy who sold Bill his sail" with "sailmaker". If I want a sailmaker on the boat, I'll have to buy him a plane ticket and a hotel room. Real sailmakers (who can look at a mis-shaped sail and know whether it's really a cut or measurement problem) are long way away from here.