The channels have {HEAD ~ a suitable diameter} to correctly size the channels 62 and 64 of the body 60 and to press {TAIL ~ the seams} 66 of the body together 
to press
The channels have { HEAD ~ a suitable diameter } to correctly size the channels 62 and 64 of the body 60 and to press { TAIL ~ the seams } 66 of the body together
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH