In the cfg files, I did find that the Horizontal Stack Winch is missing a line in the cfg MODULE { name = KASModuleWinch maxLenght = 80 cableSpring = 1000 cableDamper = 0.1 cableWidth = 0.04 motorMaxSpeed = 1 motorAcceleration = 0.05 powerDrain = 0.3 headTransformName = head headPortNodeName = portNode connectedPortNodeName = bottom anchorNodeName = anchorNode evaGrabHeadPos = (0.05, 0.01, -0.11) evaGrabHeadDir = (0,0,1) evaDropHeadPos = (0.05, 0.01, -0.16) evaDropHeadRot = (180.0, 0.0, 0.0) lockMinDist = 0.08 lockMinFwdDot = 0.90 } This is the Vertical Stack winch, Horizontal radial winch, and Vertical radial winch. Everyone one of these winches has this line of code in it. MODULE { name = KASModuleWinch maxLenght = 50 cableSpring = 1000 cableDamper = 0.1 cableWidth = 0.04 motorMaxSpeed = 2 motorAcceleration = 0.05 powerDrain = 0.5 headTransformName = head headPortNodeName = portNode connectedPortNodeName = bottom anchorNodeName = anchorNode evaGrabHeadPos = (0.05, 0.01, -0.11) evaGrabHeadDir = (0,0,1) evaDropHeadPos = (0.05, 0.01, -0.16) evaDropHeadRot = (180.0, 0.0, 0.0) ejectEnabled = true ejectForce = 20 lockMinDist = 0.08 lockMinFwdDot = 0.90 } I don't know if having these missing from the cfg (ejectEnabled = true and ejectForce = 20) is causing the problem, but I will add these lines to find out.