The Alpha 60 I just assembled had the same issues with the wrinkled covering. I also found a couple of stripes that where not stuck down very good. I think they use a very low temp iron to apply the covering - when I removed the covering from the top of the wing for a repair I found it had not stuck down well and came up with no effort. I went over the whole plane making sure I ironed all the stripes down as well as possible except over the decals which I was afraid of ruining.

Hoglfyer