I'm trying to get sixshot from plane mode to robot mode, for some reason the legs are a little hard to pull out before trying to flip them over. My question is, am I supposed to pull them apart until the legs (white part) slide over or "spread" until they are flush with the side? It just seems that it isnt they are sliding over very easily and I dont want to break it. I already moved back the black piece and "nosecone" of the plane, so thats not making it difficult. Feedback appreciated. Thanks!