A pressure supply conduit is in {HEAD ~ communication} with the dispensing conduits and {TAIL ~ both a first reservoir} containing the first component, and a second reservoir containing the second component 
A pressure supply conduit is in { HEAD ~ communication } with the dispensing conduits and { TAIL ~ both a first reservoir } containing the first component , and a second reservoir containing the second component
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH