{HEAD ~ a blade hammer} on a root portion of said blade engageable with a blade support to position said blade in {TAIL ~ the run condition}, and 
{ HEAD ~ a blade hammer } on a root portion of said blade engageable with a blade support to position said blade in { TAIL ~ the run condition } , and
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH