Are you serious? This model was presented and sold as an exact replica of the studio model as seen in "The Empire Strikes Back". There absolutely should be no missing parts.
But then you have to define what you mean by ‘exact’. There’s already numerous parts that are not ‘exactly’ the same as the actual kitbashed parts used on the studio model - most are good copies, but some are poor representations. Some parts are thicker because of the way they need to be manufactured, some dimensions of the base model are likely to be different. It just goes to follow that the amount of parts on the model are not likely to be exactly the same.