I may ahve missunderstood how to edit the image sizes of the 2nd and 3rd additional images.

I am under the impression that if I do the following, the image size of the 3rd one will show at the full size.

/images/flower.jpg
/images/flower_1.jpg
/images/flower_2.LRG.jpg

I tried doing this but the 3rd image dissapeared from the product page.

/images/flower.jpg
/images/flower_1.jpg
/images/large/flower_2.LRG.jpg