I have a 3-screen Garmin G3X panel (non-touch) that is working perfectly except my fuel quantity indicator on the right wing has gone wonky. Even after filling the tank, it indicates zero fuel. I?m assuming this is a problem with the sending unit but I wondered if anybody has any other insights. I?m guessing I probably need to replace the sending unit however my RV-7A is over 10 years old and has one of the old Stewart-Warner units (#F385B). I need to get this problem resolved before AirVenture since I will be flying from south Florida. If it is a sending unit issue, what is the sending unit you folks are installing? I currently use the float (resistive) type unit and that?s what I plan for the replacement.