ok so i have a 2.909 v1 and i really like it except a few things, when i first turn it on it will sometimes go off on ka band for a second. it also seems to just randomly false ka when driving down the road, it will normally show 4-5 leds, go on for a second and then stop. today i was sitting at a stop sign and it went off on laser twice. it does seem to pick up doors and speed signs fine. do you think it needs to be sent in for a check up?