Am trying to make a Falcon 9 which uses 3 to land because my Merlin(Vectors)dont have a good thrust to weight when i start going down towards a stock droneship or close to the KSC But evertime i do action groups it just does the entire Symetry but i want to do remove 6 engines out of action and 1 Vector isnt enough to lift it and i crash please do something devs!(Wopsy i cant move it to another discussion)