Ive got a 2003 zx200. It doesnt matter which tank I switch to on the control panel, the gauge always reads 1/4 tank lower than it should. I thought maybe the sending units needed adjusting so I removed the starboard side sending unit. And with it still hooked up I raised the float all the way as if the tank was full and sure enough the gauge only read 3/4 full. Any suggestions? Thanks all.