The combination 19 wherein said means for adjustably positioning comprises {HEAD ~ a mounting bracket} mounted to said {TAIL ~ mounting assembly} 
mounted to
The combination 19 wherein said means for adjustably positioning comprises { HEAD ~ a mounting bracket } mounted to said { TAIL ~ mounting assembly }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH TAIL TAIL TAIL TAIL TAIL TAIL