BaojeeX

I've had my GX Sport for a couple of months now and have never got around to posting this issue I have.

If I park on an incline front facing up, and for example have half a tank of fuel the needle will be on half. Yet if I point it facing down, the needle goes down a little. Is a sensor screwed or is it because there is more fuel being read in front facing up, then front facing down, in the tank?

And also sometimes I hear some sort of drainage/like water being sent to the back from the front left passenger footwell, is this also normal?