I always thought that was intended. It sort of goes along with the whole spacetrash vibe. That is one of my favorite things about the original trilogy- that 3PO and R2 and the Falcon are all old and sort of falling apart.
Also, did you take out the horrid "lock s-foils in attack position" shot? That shot always bugged me. There was this show about the making of Star Wars that I saw and they were all talking about how the audience had to buy the opening shot. And I always bought the models, but not the CGI.