I have a Solix 12 that I have been working with for months and I still cant seem to get the SI dialed in. I've toggled sensitivity, contrast, color, max/clear mode, speed (2-5mph), leveled the transducer etc.. The mega images seem to be dark (have to turn sensitivity to 17 to view the bottom in >15ft in super clear water) and grainy (sharpness off). Any ideas on how I can get the pics to clear up? I'm not getting anything close to the images posted on some of these threads.