I have a 1988 larson175 with the 4.3l. Was out yeaterday with it. The gas gauge read just above 1/4. The boat stopped so figured i was out of gas. Filled it up at the resort and it was a pain to keep it running. After a few minutes of working the throttle it was fine. But now to me it seems like it dont have the power it did before. Is there a way to adjust that gauge? Changed the plugs and the big fuel filter. Have not got a chance to run it yet but any ideas of what else it could be if this dont work? Idles fine. Thamks