I'm running into a bit of a weird issue tonight. I'm trying to lift a body from a surface (static body) by applying a force to it.
Since I'm using real-world value (and SI units), I'm expecting the value for the force (in Newton) to need to be greater than Mass * Gravity in order to cancel the action of gravity and lift the body. However, what I'm seeing is that I need to multiply the force by 4, for it to have the expected effect.
The same issue manifest it-self if I set the body high above the surface. The body will only stay stationary if the lift force is multiplied by 4.
Any idea of what could be wrong? I'm probably doing something stupid, but I can't seems to see what exactly could cause this ...

Thanks in advance.