I received my replacement aileron skin today. I was a bit disappointed that Vans charged me shipping, butI'll give them this one. I asked for four sticks of stiffeners, but was only sent and invoiced for two. Maybe I can talk them into paying for shipping for two more.
It was ~36F in the shop tonight, so all I did was to unpack the skin and measure the location of the end rib holes relative to the trailing edge using a machinist's square. Each end was identical, indicating this skin is bent perfectly.