So sorry for my late reply to this. I've been putting out fires with other pages.
This still isn't working how I hoped it would. Is there a way to sort this by order of Sku, Title, Tag, then everything else? When I search on this page: http://baproddev.staging.wpengine.com/ for 'd ring strap' the first item that pops up (Ratchet Binder with Port-A-Ring) doesn't even have 'd ring strap' listed on the page, yet it does have 'd ring'. I guess I'm hoping for more of an “exact search” priority, but it sounds like from what you're saying that isn't possible with the index table engine?
Another thing…when you search for 'd ring strap', and go to the search results page (18 results), if you click on page 2 – the search results all change and the results number bumps up to 169. Is there a way to fix this?