Teaser instead of Excerpt in post grid

Hi

On homepage of http://onedaystop.com/ I need to show teaser from my blogposts. I do not want to use excerpt, beceause it shows wrong text. Teaser (text before < ! –more– > ) is what I need to have here.

How to do it?

I will set in CSS min-height for every tile to make it align correctly.