Let me start off by saying I'm a long time garmin electronics user whom recently bought his first furuno machine and couldn't be more excited ! I bought a FCV-1150 and paired it with a Airmar-B275LHW. I live in Ft Myers, Fl where we mostly bottom fish for grouper and snapper. We fish wrecks, bottom, and ledges any where from 50-300ft of water. A few times a year we may run deep to deep drop anywhere from 300-1200ft of water. The problem I'm having is I can't seem to get the machine dialed in just right. The bottom imagine is very blurry or almost puffy looking. Just blob looking stuff on the bottom, there's no sharpness to the picture. I've played with gain dial find the best picture I can on LF is set at around 5. I never see the sharp fish shapes that I've seen in pictures posted on this site. I've only had this machine a few months so I'm very new to it. The screen rate I have it set on now is 2/1. If someone could point me in some direction that would be great !