SMART10 spare piece

A friend of mine has this awesome (originally Finnish) quiz game SMART10.He lost one of the 10 pieces you need to play. Maybe he lost a game and ate it, I don't know.Soooo I bought the game myself and designed a spare part. The fit is pretty tight but so is the game.Printed with Bambu Black PETG.I also printed it with PLA and it doesn't work, the piece breaks up too easily