Product display layout different for each product

Hi, Just wondering if someone could please help me.

I’ve today resolved a Fatal Error memory warning in my WooCommerce cart by increasing the wp-config.php file with the following code:

/** Memory Limit */
define('WP_MEMORY_LIMIT', '128M');

I’ve also cleared the “expired transients” in WooCommerce/system status/tools.

Now I have a new issue – the layout on the product page has shifted, and is different for each product. Normally there is a blue line under the product photo, under the price button, and below the product description to differentiate the sections. Now, depending on which product you look at, there are either no lines, a set of three lines grouped together, or a set of lines that looks vaguely correct. some examples are here:

https://www.thekitchenshelf.co.uk/shop/silicone-balloon-whisk/
https://www.thekitchenshelf.co.uk/shop/rhs-rosemoor-apron-green/
https://www.thekitchenshelf.co.uk/shop/burleigh-plum-prunus-10-plate/

Is this a WooCommerce issue, or a theme issue, and does anyone know if replacing the relevant .CSS files would resolve the issue?

I’m on WordPress 3.5.2, WooCommerce 2.0.13 and use a theme called Sold! by Parker & Kent (version 3.0.3)

Many thanks, David

https://www.ads-software.com/plugins/woocommerce/