In one embodiment, grooves are formed in {TAIL ~ the fixed scroll member} to communicate a selected intermediate pressure and a discharge pressure to locations on the base plate of {HEAD ~ the fixed scroll member} 
In one embodiment , grooves are formed in { TAIL ~ the fixed scroll member } to communicate a selected intermediate pressure and a discharge pressure to locations on the base plate of { HEAD ~ the fixed scroll member }
OTH OTH OTH OTH 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 OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD