Credit to the amazing design from humebeam for the AMS mod Hydra. He also released some load buttons that suit both Hydra and the standard AMS. I wanted numbers on the buttons to correspond to the AMS slots in Bambu Studio. This is a remix of the buttons with the numbers on. NOTE: Updated to use the latest design from humebeam
I found a quick clear of the hole with a 4mm drill is the best method after printing.
I suggest you follow the excellent guide from the original for fitting.
https://makerworld.com/en/models/17428#profileId-17770