I'm going with the Cherry Keeper. The cages are all standard sizes but there are a bazillion different gap / angle combinations available for...
All the pictures in the original post are gone. I get a 502 error when I try to view them. I'm confused what you mean by the "stocking" technique.
How do I accurately measure the angle that I need between a dummy ring (sizing ring) and a cage? It seems like most things I've read have said...