Contracting garter springs 28 engage the footed portions 18 of {TAIL ~ the sprags} 16 and urge the cams into {HEAD ~ race engaging positions} 
Contracting garter springs 28 engage the footed portions 18 of { TAIL ~ the sprags } 16 and urge the cams into { HEAD ~ race engaging positions }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD