Suntracker party deck fuel sending unit

[CastleRock4me]

Filled my 2004 Suntracker party deck 21 with gas at the beginning of last year and now the Guage is stuck on full. Can't find any easy way to access the sender.

Anyone have any ideas? I followed the gas lines down to the tank; however, would have to pull the seats out to follow all the way to the tank.


Thanks