Just wanted to follow up my solution for this in case it’s useful for anyone. So i accessed the twi carousel plugin files via my ftp client. I searched the files for text string “out of stock” and found the location of these within the files. I changed this to ‘Sold’. Specifically the changing this within the file rib.php solved the problem. It’s likely that if i need to update the plugin in the future i will need to change this text again but it’s worked for now.