What level do you turn the Dogtra collar up to for your dog? My collar has 1 - 127 levels. I have been using 20 - 40 and the pager. It seems you have to turn it up to 40 the farther out he goes. It is an older collar (8y). I am getting a new Dogtra soon. Just curious as I am seeing that the collar definitely can be your friend (IP) when the dog is way out there doing his own thing. Thanks in advance.