I'm planning on making a long journey to moho, so far I have my giant rocket orbiting earth, I've rendevou'd with it a few times to refuel it and it's nearly full. I have 4 docking ports on my rocket.( one on each side). My original plan was to fuel up, then add 4 more fuel containers to each docking port What I've noticed when clamping on is there's a little wobble. If I fire my main engines, will my fuel containers come off the docking ports? If so, any tips for securing these containers before I start my burns?