My son has an AT Pro, It was 2 years old in June. Since he has owned it, he has had the control box break off twice, at the 2 mounting studs on the bottom side of the control box. I was with him the second time it happened, he was swinging it side to side and it just fell off. He uses the detector 5 or 6 days a week, 4 or 5 hours a day, which I know is a lot of use, but I dont think that should really have anything to do with the plastic wearing out. I was just wondering if anyone else has had any problems like this. it is now out of warranty, so I dont have a clue what a new control box housing will run.