meh...you're probably right...to save time in double checking my answer, I just went to the starwars.com Databank, and checked which ships were only in the ROTJ. According to it, the Lamba shuttle was in both. And I watched the SE of ESB the other day, I assumed it right. Not that I'm complaining. The Lamba is my favorite ship in the Star Wars universe, so the more of it, the better.