Garmin 320 questions

I just spoke to garmin and reinstalled software. they told me that if the collar is with then 9ft of handheld it may show the wrong direction. also told me if I was going to a dog that the compass might start going crazy around 30ft but anything further it will show you the right direction. I guess pretty much when u close it sucks but great when your way out its great. I was going to exchange it but I see myself having the same problem. I should have kept my 220 I guess im going to see how these updates do are get some long range dogs.