im not sure, but i think that that may be a feature of the camera
i do have 13 images that recovered in whole. they are the same size (physical) as the rest of the partial images
all images (whole and partial) weigh in at 1,474,560 bytes

edit : recovered 10 more good images. upped number from 3 to 13

edit edit : oddly enough, the 13 recovered images were from the higher clusters on the card. seems to be more than coincidence until i look at all of the broken images breaking at roughly the same point. (about 1/3 of the image at the top being displayed)