Bird Feeder Adapter

The Tui bird feeder for nectar feeding birds (mainly Tuis) is great but the container has poor UV protection and cracks after only a few years (see photo). I made this adapter to convert the base of the feeder to use a standard soft drink bottle thread. I tried it with 2.25 litre coke bottles but the bottle collapses, so I am using smaller drink bottles (haven't tried the 1.25 litre bottle yet). I also found that it didn't seal quite well enough, and so I made some grommets/seals for the adapter and the bottle...works fine and does not leak now). I printed the adapter in PLA+ and the grommets in TPU95.
The Tuis are back now and enjoying it...