I had the same problem and contacted Iris about it, without getting an answer. I finally found yourpasswordrulesarestupid's method this morning here and modified both files as he said. After that, miraculously, I was able to fly the Tutor T1 in MSFS 2024 with the canopy closed! Fantastic, and thank you very much for that. However, I no longer have the engine sound, which doesn't prevent flying, but it's a bit disturbing all the same. Does anyone know how to put it back? Note, radio conversations work very well, though.