They simply cannot be found, in the US at least. I'm watching a micro auction that has a 4 pack of generic plates just because I wanna see the quality. Other than that, I can't find em.
Yeah, check my photo thread. I got the prototype and it fits nicely. Have to make one small tweak and then take a look at the 2nd proto and then they'll be good to go!
FYI, I just watched a brand new Nintendo brand replacement go for 50+ on eBay last month. That's what really made me wanna find another solution.