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