Was thinking more about the depth gauge on the survey. Either way, if any doubt, replace impellers and back flush.

A friend just bought a 35 beak the week before tickfaw 200. Impeller when out on the way back on his S 496HO. Closed cooling kept engine cool while rubber exhaust hose caught fire and lit engine cowl. Damage wasn't too bad, but hatches had gel damage that had to be repaired and plug wire burned off.

My 2004 35 Ex always reads Full of fuel when sitting in the water, sending units are in rear of tanks and boat sits so low to the stern. The first time I let the gauges come off full when underway we ended up being towed back to the dock. If the fuel gauges come off Full when you come off plane then its time to refuel. Word of advise, if you ever fill the boat while on a trailer try to have truck up hill when fueling or drop trailer jack, if you fuel boat and it is sitting level on trailer its gonna constantly spew fuel from the tank breather vent. I always fuel on trailer and its a pain. As far as the water pressure gauges go mine read exact same press with both motors, I do remove water line from back of gauges and side of sea pumps and blow air through the line every season, blow from gauge end into bilge.

I filled it on the water, there was a little coming out of the vent when it got close to being full, like 20 gallons more. This is normal?

The fuel level sending units on Fountains are notoriously bad. If they are more than a few years old, they stop working. They are also located in the rear of the tank, so will always read fuller than they are. When they are working properly, they are most accurate when you're on plane. I've replaced mine with Livorsi auto-cal senders and they are working pretty well, but still never fully trust them. Here's what I do. Fill the boat up and take note of the hours. Run the boat a few times, go back and fill up again and take note of the hours and how many gallons consumed. Basically, that gives you an average gals / running hour that takes into account idling, running, etc. Then just watch the hours and when you think you're getting close, go back and fill up.

Fountain spins the props in, which makes docking with the engines less responsive. You get used to it, just take your time. I sometimes use just one engine to start the turn in reverse, then bring in the opposite forward engine once it starts turning.

The fuel senders are adjustable with the small Philips head screws. When full turn the adjustment until the gauge reads right on the full mark, very small adjustments. When you get close to empty turn the e side down so gauges are right at empty. Mine now work better than stock, but still not perfect due to the shape of the tank.

Depth sending unit should have antifreeze between sounder and base if you have the same one I do. Undo from base and make sure there is fluid in there and check again. I trust my depth finder less than mine fuel gauges.

Not that it matters for me anymore because I replaced mine, but where are those adjustment screws, I didn't see anything like that on mine.

There are on either side of dead center. Mine has the wires going through the center and the screws on either side of them, they were covered with what looked like liquid electrical tape.

Tim I really liked you new Fountain looked great at Waters Edge Sunday and looked even better when you were under way.
Good luck Rich