NookRitzia

What would be best for putting at the end of my rocket instead of the shock intake cones? And how do I make the fuel in the front be the last to be depleted, is there a way other than clicked on the green arrow?

Here is the picture https://postimg.org/image/sjx7sf39t/, some of my Liquid Fuel is taken out before hand due to the fact that I will be using more liquid fuel on my ascent so I were to be carrying dead weight. https://postimg.org/image/ponh59egx/ This picture is my "glider" after all fuel is out and there is no cargo.

So when I came in for a landing My spaceplane keeps rolling out of control once it goes below 27,000 Meters. It basically doest the motion you do when you press A and D. It is uncontrollable my whole place is symmetrical, anyone knows what it could be?