The email has an image size 600px by 150px. The problem I am having is that when i send this email, when viewed before clicking "display images below" the image space is more like 600 x 2000. (it looks fine when images are shown)

If i created the email in html mode i would be able to specify the height and width which would prevent this issue. Is there a way to do this in when using template. The only size options seem to be small, medium, large, fit and original and neither of these solves the problem. 

This is causing problems with my campaigns as it completely messes up the layout and people are unlikely to scroll that far to the main content.