Problem with cloth physics

I’ve been making a low poly ship in blender, and have been having trouble with the cloth physics on the sails. The first sail I made works perfectly, but the other two, (which have the exact same cloth settings as the first) don’t work at all. I’ve tried deleting the bakes and re-baking everything. Unfortunately, as a new user here i can’t upload attachments so i can’t give you the blend file, but if anyone has an idea what could be wrong, that would be great.

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