Ok I cant say for shure and out of fairness ive only fished 7 times this year in my boat..But the only thing different is I changed reg. 840 probe to a X-4 probe...Now I did as any smart electrician would do after reading the X 4 probe is actavated by water, so i stuck my tounge on it and it does make a clicking sound when on...should I have brushed my teeth first as to not stink up the probe,,,,,,,,,,Does my program need that much work ,or has anyone else sorta noticed the same???