The spacing of {TAIL ~ the pilot} holes 164 should correspond to {HEAD ~ the desired location} of the screw sleeve 50 that are to be fixed in place 
The spacing of { TAIL ~ the pilot } holes 164 should correspond to { HEAD ~ the desired location } of the screw sleeve 50 that are to be fixed in place
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH