Between the cylindrical rebate 27 and {TAIL ~ the sloping surface} 25, each fly weight 22 has {HEAD ~ a radially extending thrust surface} 29 
Between the cylindrical rebate 27 and { TAIL ~ the sloping surface } 25 , each fly weight 22 has { HEAD ~ a radially extending thrust surface } 29
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH