{HEAD ~ An adjustable weight} is provided to control the force exerted upon {TAIL ~ a signature stack} during operation 
{ HEAD ~ An adjustable weight } is provided to control the force exerted upon { TAIL ~ a signature stack } during operation
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH