[Plugin: WP Posts Filter] exactly what I needed!

You can adjust your settings either using shortcode parameters or heading/content class settings in the plugin settings page. Just give a different name to a style you wan to adjust. In your case, you can set different style for the post heading. Just give it a name that differs from entry-title, e.g. antother-entry-title. Then set it up in the style.css file of your theme by adding something like this:

.another-entry-style {
    margin-top:<a number of>px;
}

You can also set more than one css-style to an element. This way, it would look like this: entry-title adjusted-padding in plugin settings page or a shortcode on a page. After that, you need to change style.css of your theme. This way, it would look like this:

.adjusted-padding {
    padding-top:<a number of>px;
}

Oh, and the last case I forgot to mention is you don’t even need to change style names in plugin settings page or a shortcode, just edit an entry for .entry-title style in style.css of your theme. Obviously, you’ll get changes applied to ALL tags with .entry-title style on your website then.

Hope it helps.
P.S.:Sorry for late reply. Seems like notification mail fell in to the spam folder.