Need some help with mechanics
I have been building a razor crest for a few to one days I am semi-new to Lego Fortnite and completely new to building any flying machine this razor crest is honestly my first build in the game besides the pre-built ones. Anyways I need some help with how these mechanics work I've been putting balloons in certain places like some in the front and some in the middle because those are where the most weight is coming from but it's still so so heavy and whenever I use my up thrusters it flips to the front so I keep placing balloons in the front even so the whole things barely even lifting up.
I also have a problem with it kinda drifting off to the left side which I thought was because of an imbalance but I have no idea what that could be because I copied each side to each other. (the thrusters on the left were to lift it back up because it was on its side)