{HEAD ~ The method} 4 wherein said step of adjusting includes the step of changing {TAIL ~ the distance} between said spaced points 
{ HEAD ~ The method } 4 wherein said step of adjusting includes the step of changing { TAIL ~ the distance } between said spaced points
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH