Cloth Shrinking in Play Mode

[kingceryn]

I'm trying to recreate the Boat example with my own meshes, and for some reason my Sail mesh is shrinking when i enter play mode.  I'm pretty sure i have the constraints setup properly, and the parenting to the Mast pivot, but the Sail itself shrinks down and i cant figure out why.

The mesh scale is 1,1,1 
https://www.youtube.com/watch?v=VikMrIx7YNc