OK, I give up. I received two Bipe lower wings from GP (By the way, how come? I asked only once). The first one had the same wingtip folds as the original and the second I received with a big hole in the lower part of the wing covering. Now, it is far easier to get some white monokote and patch the holes or cut off and replace the wrinkled part if required than contact GP and have them send another.

Ameyam