A pattern of {HEAD ~ slots} 106 in {TAIL ~ the support plate} 36 are also provided which prevents any build up of fines that may cause tilting and jamming of the pusher plate assembly 40 
A pattern of { HEAD ~ slots } 106 in { TAIL ~ the support plate } 36 are also provided which prevents any build up of fines that may cause tilting and jamming of the pusher plate assembly 40
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH