Hi scotty, glad to see you using it. The boat had 240 ish litres when I delivered it to you, the likyhood is that it may need to be recalibrated as it always worked depressingly well. Just before we sold it the trim metre was renewed as it had never been operational and I wanted it all shiny for sale.
Theres a chance that somewhere along the line it was reset as when I used it it was set to litres.
The best way is to refil and recalibrate at the same time to full then test it by running, if theres no drop in ltres there must be a fault in the sender which is located in the small awkward black deck hatch under your left foot.
definately get your mate to have a look as it was something I never needed to do so can't suggest a way to do it!
have you taken any pics yet??