FYI - got mine also from AOA! But, for me, it was awkward to use. I had to do some dremel "work" to one of the two I bought to make it easier for me to insert a pellet. Maybe I missed the boat on any procedure to follow but I cannot seem to align the pellet for a proper alignment using my fingers. I had to use a tweezer to help realign the pellet before closing the breech.
But I still use these trays. No regrets in paying for them.
Take care!
OldFalc