Debug the vertical rhythm in your site by adding a grid overlay. It's been design to be use with compass and it uses Basehold.it(http://basehold.it/), the quick, painless, javascript-free baseline overlay.

vertical-grid-compass-mixin.scss

@mixin vertical-grid($color:null, $alpha:null, $base-line-height:$base-line-height){

	// Remove unit
	$base-line-height: $base-line-height / ($base-line-height * 0 + 1);

	//Extract chanels
	$get-red: red($color);
	$get-green: green($color);
	$get-blue: blue($color);

	@if $color == null {
		@import url("http://basehold.it/#{$base-line-height}");
	}
	  @if $alpha == null {
		@import url("http://basehold.it/#{$base-line-height}/#{$get-red}/#{$get-green}/#{$get-blue}");
	}
	@else {
		@import url("http://basehold.it/#{$base-line-height}/#{$get-red}/#{$get-green}/#{$get-blue}/#{$alpha}");
	}
}