The cylinder assembly 2 wherein said relief means comprises a recess formed in {HEAD ~ said other side wall} adjacent said {TAIL ~ first tumbler spring seat} 
The cylinder assembly 2 wherein said relief means comprises a recess formed in { HEAD ~ said other side wall } adjacent said { TAIL ~ first tumbler spring seat }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL