Image size in Spirit Upfront for blog pages

When placing images in a blog post, Spirit seems to render them in only one size - overly large. No matter what size I import the image in it expands them to a super large and clunky size. And the editor does not behave the same way as a page editor where you can modify the size of an image, text block or widget.

Is there a hidden trick or bit of code that will keep the images the preferred size within a blog post? Or another trick so that I don't have to break up the blog text to insert an image and keep it the right size?

Thanks.

Tom