My room mate and I both have 1.8v V1s in our cars. Mine is 3.818 and his is 3.6something. His has serious issues on K band. I can put the radar gun right next to it and fire and it takes his v1 a good 5 seconds to alert. The one in my car instantly alerts and you cant even trigger it fast enough for it not to pick it up. Even my road patrol xk gets alerts instantly. yesterday i had him drive down our street both ways and i clocked him several times and he never even got a peep. I think im going to mail his in. Will we get a new one for free, because its defective? Otherwise, he is just going to upgrade. What could this be?