As in the previous embodiments {HEAD ~ each coaxial electrode assembly} 52 has {TAIL ~ its own anodic wire spool}  
has
As in the previous embodiments { HEAD ~ each coaxial electrode assembly } 52 has { TAIL ~ its own anodic wire spool }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH