I haven't filled my tank past 3/4 since I purchased the boat last month. My gauge was working fine until I filled my tank almost to full. It reads empty then bounces to full and then right back to empty. I replaced the connector and spliced the wire to get a fresh connection due to slight corrosion. But it still does the same thing. Is it possible since the tank is full the arm is stuck, I've been through just about all the fuel gauge problem posts, but nothing seems to match.