change Masonry title from h3 to

Hey laptophobo,
Thank you for your patience and explaining the situation, it sounds like you may need to change the tags differently on different pages based on the page structure, so there would not be one setting that would work for you across your whole site, I would recommend adding the script to a code block on each page that you will use it on, and changing the tag to suit for that page.

<script>
(function($) {
  $(document).ready(function(){
    function replaceElementTag(targetSelector, newTagString) {
      $(targetSelector).each(function(){
        var newElem = $(newTagString, {html: $(this).html()});
        $.each(this.attributes, function() {
          newElem.attr(this.name, this.value);
        });
        $(this).replaceWith(newElem);
      });
    }
    replaceElementTag('h3.av-masonry-entry-title', '<h2></h2>');
  });
}(jQuery)); 
</script>

Please note that the script is wrapped with <script> tags, this is so it will work in a code block element.
Please give this a try and if you have any issues getting it to work please link to the page so we can see.

Best regards,
Mike

Hi,
Thank you for the feedback and the link to your site, I see that you are getting this error in your console: Uncaught ReferenceError: jQuery is not defined I believe this points to you having the Load jQuery in your footer setting enabled in your theme settings, so the script runs before the jQuery library is loaded.
To correct this you could disable the setting so the JQuery library is loaded in the head, but I assume you would prefer to not allow this so try this script instead, it will try to wait until after the DOM is loaded before running the script:

<script>
window.addEventListener('DOMContentLoaded', function() {
(function($) {
  $(document).ready(function(){
    function replaceElementTag(targetSelector, newTagString) {
      $(targetSelector).each(function(){
        var newElem = $(newTagString, {html: $(this).html()});
        $.each(this.attributes, function() {
          newElem.attr(this.name, this.value);
        });
        $(this).replaceWith(newElem);
      });
    }
    replaceElementTag('h3.av-masonry-entry-title', '<h2></h2>');
  });
}(jQuery)); 
 });
</script>

Best regards,
Mike