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