I don't know what happened, but for the last couple of weeks my V1 has been performing extremely well. For a while I thought that the "J" feature was a load of BS because I hardly ever saw it and I was getting LOADS of Ka falses from other detectors. It was driving me nuts because I expected a whole lot more! But lately things have changed for the better. I've seen the "J" feature probably 7 or 8 times in my last 1000 miles of driving and zero un-explained Ka falses. I almost thought that was going to end this morning as I got a weak Ka alert that just ended. But a few seconds later it came back with the "J"! I'm impressed, but I have to wonder what was going on in May and June. Anybody else have an experience like this where it's performing terribly for a while and then suddenly works really really well?