Sam deval

I bought this thing and stuck on pack 1 putting together the engine it's impossible you can't move it whatsoever or it slides out of place but you need to snap it together which when you do it slides out of place thought it would be fun but now it's not even fun to do got 2 more packages but not putting it together cause I am stuck on this certain part I can definitely see that I'm going to have all the parts but it's just simply going to sit there till I throw it out