Rocket Ripping

[Fenceingmadman]

Hello im relatively new to ksp and have just recently been able to land on the moon but no other planets. I was launching a probe that would flyby duna so i could plan a landing. As i built the rocket and launched it i had several problems but was able to fix most of them. But one still bothers me. Its 1st stage is a 2.5 meter orange tank with a mainsail engine. Then it has 6 boosters they have 2 of the extened out to the sides decouplers. They consist of to fl-800 tanks with a nose cone and vector engines When i launch these boosters wobble along the frame and always make me crash. (they bounce up and down and make it unstable.) This is why i added the second decoupler but it still does not work. Any help apprecated Thanks in advance. 

Edited December 18, 2019 by Fenceingmadman

[AHHans]

Hi @Fenceingmadman

You need: Moar Struts! (SCNR!) Well, at least autostruts. You may also want to look at e.g. the following thread:

P.S. The Vector is a *bleep*ing strong engine. To me it seems a bit overkill for a 1.25 m side-booster. Doesn't it suck the tanks dry in next to no time?

[Fierce Wolf]

Second decouplers won't work. One piece can only have one parent piece, in the case of a fuel tank, it's just ONE decoupler, and that one decoupler also has only one parent piece. You can however use struts, as many as you like, thy will make your craft wobbly-proof