The base plate of the disc drive may also have a stepped mounting surface and {HEAD ~ a shoulder} for {TAIL ~ the dampening member} 
The base plate of the disc drive may also have a stepped mounting surface and { HEAD ~ a shoulder } for { TAIL ~ the dampening member }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL