Yes, the baffle was removed then tested. The resistance changed accordingly. Below is the process I had used to check for the gauge and baffle.
( Purple wire) wire from the engine harness is connected to the IGN or I Terminal on the gauge. The negative or ground terminal of the gauge is connected to the boats grounding system. The S or Sender terminal is connected to the Fuel tank sender. The fuel tank must also have a connection to the boats grounding system To troubleshoot your boats fuel gauge and sender, Do the following. After insuring that your wiring between the fuel sender on the tank and the connections on the fuel gauge are correct. Turn the Ign Key to "ON" and Using a jumper wire, ground the center or S terminal on the fuel sender at the tank If your fuel gauge jumps to the FULL reading, the problem is in the fuel tank sender. If your fuel gauge does not move, proceed to the next step. Using a test light, with the key in the on position. Check for power at the I or Ignition terminal on the gauge. If Power is "ON" at gauge terminal, ground "S" terminal and "G" terminal and check gauge reading. If reading moves to full then you have a wiring problem between gauge and sender,otherwise gauge is defective. If the power is "OFF" at the gauge terminal, check for ground by connecting tester to Ignition switch "RED" terminal and to the "G" Terminal on the gauge. If the ground is good, use a jumper to power gauge "I" terminal and retest gauge.