I did a bit of research on Papilio and found that it is common for them to start to set seeds and then abort. The thought is that it is problem with the genetics. Papilio will only cross with certain other amaryllis. And either you will get no seeds at all, or the seeds will start to develop but then fail. So perhaps you should use a different amaryllis to cross it with? Or did you actually pollinate it with itself? Also, I learned that when you do a cross with Papilio you will get the same results if you cross either way - does not matter which one is the pollen donor or the seed parent. Not sure if I believe that or not. I was thinking of trying a cross between Papilio and Rilona. Not sure if those 2 would be compatible or not. Also, I have heard that the pollen does not last very long if you store it. But then on the flip side, I heard it would store up to year in the fridge if kept very dry. I do wish I knew more.