H1 Tags on slider and SEO – read code?

We believe we have had an ongoing problem with H1 tags not being populated properley and negativley effecting SEO.

Ie various tags associated with slider, some blank some not.

We are using a modified theme, which was modified from a free Theme – yes I know! But we are where we are……

Below is two paragraphs of code from slider,one fro original theme one from modified theme.

which may or may not be affrdcting H1 tags.

Would someone who understands please read through paragraphs of code and comment on how they diifere in their results

[ Moderator note: code fixed. Please wrap code in the backtick character or use the code button. ]

<strong>Modified Theme</strong>
<span class="karmic_flow_controller_selected"><a>" target="container3"><h1><?php the_title(); ?></h1><p><?php echo get_post_meta($post->ID, "slider_txt", true); ?></p><a class="slider-read-more"
    href="<?php the_permalink(); ?>">Read more... ? </a></span

<strong>Original Theme</strong>
<span class="karmic_flow_controller_selected"><a>" target="container3"><h1><?php the_title(); ?></h1><p><?php the_content_limit(75, "more"); ?> </p><a class="slider-read-more"
href="<?php the_permalink(); ?>">Read more... ? </a></span>

Many thanks in advance