So Ive had my 999 si for over a year and we have had our ups and downs. Its installed on a 17ft aluminum basstracker with a 25 2 stroke. I also have a 598 si on the trolling motor which works great (just wish I had a bigger screen). The 999 works great 90% of the time but the other 10% it acts funny. It seems i am getting interference from somewhere but I am at a loss. It has all the newest software updates. The image i have attached shows one of the thing it will do sometimes. Other times it produces this poor quality on both sides. Still other times while in sonar mode it will produce slanted lines that run from the bottom toward the top of the screen as it is scrolling. At first I though it was a fish swimming from the bottom up to check out the boat, but now it does it all over the place, but only for a short time and then it stops. Other times i will be running SideImaging and make a U turn to re-scan an area and it produces an image that looks very similar to a bait fish cloud, but its definitely not bait fish. Has anyone else had this problem. I just found out how to record what my unit is doing (which led me to this site!) so next weekend when i get out on the water I will try to record when it does these things. Any ideas whats going on? Thanks for the help in advance.