Ok, I'm giving them the benefit of the doubt.... I just had my boat out for the second time since the new motor was installed. (Suzuki 225hp 4strk) The first time out it seemed as if the digital read out of gph was accurate. This last time out it was way off. Showing 8 gph at max speed and trip fuel used was 39 gallons when I burned up 90 gallons. I just read through the manual and I don't see a way to really calibrate the gph being used. Has anyone else had this problem? Everything else seems to be fine as far as reading the RPM's, Battery Voltage and Trim. Is mine defective or is that just the way these things are- Not Accurate???