Take a section or two out at a time and post until you find out which it is. Or simply print out what you have then start over using our design editor.
Alternately you could post a test listing on eBay and then make the changes as I've suggested above and use eBays revise feature and our GetHTML feature to revise the listing pasting in the different attempts. That way you wouldn't need to pay seperate listings fees for each attempt.