One last question about your lovely theme. For this website (http://www.sharynlightfoot.com), I've used a featured category to use for the slider images at the top of the opening page. And I've used featured images for the 200x200 thumbnails for the bottom of the opening page.
My problem is that when I try to add a featured image to the posts whose images are used for the slider, that tiny thumbnail is grotesquely enlarged to become the slider image.
When I don't add a featured image (as now), the slider image looks just right but the thumbnail that is generated for it is disproportionate.
Is this one more thing I'm misunderstanding or doing wrong, or is there a workaround?