Im having a bit of trouble re attaching the hw-80 winch to the side of the modular girder XL. It says node cant be used for surface attach. Is this a bug?? Ive tried (R) and rotating it every which of way. It attaches to the end of it fine though.. kust wont let me reattach it from where I took it off? or on any side of the modular girder except for the far ends?