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Magento can be a bit of a pain when it comes to duplicate content, but in this case I think you need to clarify where the actual problem exists. For the too many onpage links, this is not an error, simply a suggestion/notice and is something quite a few sites show in moz tools, so skip that for the moment. For the link examples you give like this: bikerleather.com/mens-vest-2032 - this page 302 redirects to the homepage... thats a problem, especially if it is being linked to internally from somewhere. Check out your site with screaming frog or some specific links here: http://www.internetofficer.com/seo-tool/redirect-check/ You have quite a few 302 redirects on the site, so it seems that the moz report is correctly identifying this still. This might well be the root cause of the duplicate content also, since all the 302s go to the homepage... that is technically a duplicate content issue! Personally I would be cautious about disabling the internal magento url rewriting and trying to handle it all with an htaccess file, it is not very future proof and I think you will get into more trouble that it is worth in the medium term. What to do? Download the moz errors report in csv, filter for duplicate content and/or 302 issues and then look in the far right hand column for the url which linked to the page. Chances are you will find a pattern emerging where 302/duplicate content errors are being spawned off by specific components or pages in the system. Those are the easy fixes, once those are done you will be left with the more difficult fixes, but at least there should be a lot less of them! Hope that helps!