Ducky's are, well... difficult. They are incredibly rare. In fact, it's unlikely that the popular sites such as mechanicalkeyboards or ncix us will be restocking shine 3's ever again. So if you're looking to buy a new board, good luck to you. Not saying it's impossible, just difficult, and potentially pricey.
As far as the feet... try the filco ones mentioned above... it can't hurt it anymore, right? Or try using without the feet. I personally use my ducky without the feet, but it's just my preference.