TOP- You used my favorite part THE KubLab Hint: The KubLab is unfortunably a decoupler. If you want to change that, go to the part.config open with editor, delete all and copy this: // Kerbal Space Program - Part Config // KubLab Space Laboratory // // --- general parameters --- name = KubLab module = Strut author = Oana Croitoru Reedited by: K.C.S.T. // --- asset parameters --- mesh = kublab.dae scale = 1.0 texture = kublab.png specPower = 0.5 rimFalloff = 3 alphaCutoff = 0.5 // --- node definitions --- // definition format is Position X, Position Y, Position Z, Up X, Up Y, Up Z node_stack_top = 0.0, 2.324, 0.0, 0.0, 1.0, 0.0 node_stack_bottom = 0.0, -2.524, 0.0, 0.0, 1.0, 0.0 // --- FX definitions --- //fx_gasBurst_white = 0.0, 2.0, 0.0, 0.0, 1.0, 0.0, activate sound_vent_large = activate // --- editor parameters --- cost = 40000 category = 3 subcategory = 0 title = KubLab manufacturer = KubLab Industries XD description = KubLab Module // attachment rules: stack, srfAttach, allowStack, allowSrfAttach, allowCollision attachRules = 1,0,1,0,0 // --- standard part parameters --- mass = 2 dragModelType = default maximum_drag = 0.2 minimum_drag = 0.2 angularDrag = 2 crashTolerance = 7 maxTemp = 3600