Just called and spoke to one of the tech's they say the letters go up but the reason why the letters are facing down on the top ring is because there wasn't any room on the top of the ring so they printed the number on the bottom.
The bottom ring is square with no taper so it can go either direction but usually people have them writing facing up
Well I looked at my original pistons and the bottom ring had the leters up
And I measured all the rings I had. They are all square :-D
Now the only thing im missing is good raves. I dont want to use mine again although I could.