( guys this save will not get any updates and the solid boosters and the V2 has no thrust so please dont use them, fully decoration )
Oh wait u mean i can turn it on and off? and im using grvt to make a next better engine(no gimbal sorry)
wdym the v2 uses liquid fuel
make a liquid fuelled engine and modular fuel tanks
You should use GRVT/NEUT/PROT/etc with life, tmp, vx, and vy all set to 0 for your booster/fuel tank deco +1