David, I'm using the Alpha 320 system that I've had for 5 seasons with Abby and 2 with Willa Everynow and then, I'll drop a dog, but cure it relatively easy. Of course, I am mostly weekend warrioring while you are out a lot more than most of us. Is Garmin standing behind the product? Two years is not very long. Of course, in dog years, that's 14 years. Is it the collar or handheld that gives the problem? Gil