We purchased a new Fuel in September and since we've had it, water sprays from the toilet when it's flushed. Instead of the water spraying down into the toilet to help clean when flushing, it goes up and out. It's a serious pain in the ***! I was told the water pressure may be too high, that it should be at 40psi, but we don't see where to check the water pressure or where to adjust it. Looking for some help please!