This is a common complaint among user reviews at websites like [http://www.amazon.com/Cuisinart-DLC-2A-Mini-Prep-Processor-White/product-reviews/B0000645YL/ref=cm_cr_dp_qt_hist_one?ie=UTF8&filterBy=addOneStar&showViewpoints=0|Amazon]. To achieve maximum uniformity in the size of the processed food pieces, pre-cut/chop food on a cutting board into smaller pieces. Attempts to process food that has already been properly prepared for the food processor will yield more desirable results than attempting to process whole food items.