fabiofonsv

That should be it, when I emptied the fuel, than the CoM got a little hard to control. Thank you, guys.

Turns out it was something to do with the engine gimbal, i disabled it and used the RCS to navigate. But I still want to know, if possible, what was going wrong.

I'm trying to send a rover to Mun. Everything is going ok, until I establish a Mun orbit. When I'm in a "pass trough" trajectory it goes ok, the moment the orbit become elipsal, the ship keeps turning all around when I fire the rocket. It's like it is sliding because of the acceleration. The ship is only the rocket for landing and the rover. Look, the exact moment it start turning: