Swift - sprite kit - make SKPhysicsJointPin have less motion -

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i'm trying create snake multiple body parts moves left , right. im using pin, upon snake stopping, body keeps moving , doesn't stop. i've messed around max , min angles, , torque, nothing seems work. should use different type of joint?

sorry cant log other account, heres code. second part wobbles lot. wish add 7-8 parts, keep on wobbling, after moving "head". fluid "swoop" motion when move snake.

    self.physicsworld.gravity = cgvectormake(0, -100)     self.physicsworld.contactdelegate = self      head.size = cgsize(width: 25,height: 25)     head.physicsbody = skphysicsbody(texture: head.texture, size: head.size)     head.position = cgpointmake(100,400)     head.anchorpoint = cgpoint(x: 0.5, y: 1)     head.physicsbody!.dynamic = false     head.zposition = 3     self.addchild(head)      var p1 = skspritenode(imagenamed: "snakebodypart.png")     p1.size = cgsize(width: 25,height: 25)     p1.physicsbody = skphysicsbody(texture: p1.texture, size: p1.size)     p1.position = cgpointmake(100,380)     p1.anchorpoint = cgpoint(x: 0.5, y: 1)     p1.physicsbody!.dynamic = true     addchild(p1)      var joint = skphysicsjointpin.jointwithbodya(head.physicsbody, bodyb: p1.physicsbody, anchor: cgpoint(x: cgrectgetmidx(head.frame), y: cgrectgetminy(head.frame) + 10))     joint.upperanglelimit = 0.1     joint.rotationspeed = 0.1     self.physicsworld.addjoint(joint)

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