Case of The Royal Tudor Beasts Collection coins

Hello everyone, I recently bought a box for The Royal Tudor Beasts coin collection from Leuchtturm. The box is beautiful, but the diameter for the coins is 45 mm, while the original capsules for the 2 oz proofs are 47 mm, so they don't fit. Could you please tell me if there are any capsules with an inner diameter of 40 mm and an outer diameter of 45 mm for 2 oz? Also, I was wondering if all the coins in this series were released as bullion? I couldn't find the panther as a two-ounce bullion anywhere. And another question, is it possible to buy the original case from the Royal Mint for this series anywhere?