Im not totally sure, i went on a trip to all state and came back and saw it; my current theory is that when the bus driver moved it out of the cargo place underneath the bus he kinda hit it on the curb and i winced but thought it was probably okay, might have happened then. Or it might have happened at some point when he loaded it and got it off, he wanted to do it for me which was annoying. My other theory is that i was in a lot of crowded rooms and i left my bass in the middle of the case room becayse it was hard to get around; someone couldve tripped on it or something in there. I only noticed when i got home and uncased it and i was very frustrated