Here is Rodimus from the front:

And here he is with the wing on:

Now how did I do it?
I did what Hasbro should have done in the first place:

Why could they not add two little holes to make the wing stay in place? As you can see the modifications don't hinder the alt mode:

I marked the locations and used a small drill bit to drill 2 sets of small holes and the used a mini file to shape them.
So what to you guys think?