I'm creating a fluid based html email and I'm running into this problem where the fluid images are creating small, 1-2px padding between each other when the viewport starts going below the email containers maximum width (640px). Because of the way I have the columns set up, I see that as the viewport shrinks, the images add spacing between them when the dimensions aren't even. Is there anyway, within the capabilities of most email clients, to keep these images from adding additional spacing?

Example of what I'm working on here http://jsfiddle.net/kzk4qrwq/