A pliable sheath 273 slightly longer than {HEAD ~ L2} is placed over {TAIL ~ intermediate tube} 216 in bend region 218 to cover slots 266 
A pliable sheath 273 slightly longer than { HEAD ~ L2 } is placed over { TAIL ~ intermediate tube } 216 in bend region 218 to cover slots 266
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH