In addition, two opposed idler wheels bias {HEAD ~ the spans} together above {TAIL ~ the horizontal flat registration plate} at about 3/5 of the travel distance through the assembly 
In addition , two opposed idler wheels bias { HEAD ~ the spans } together above { TAIL ~ the horizontal flat registration plate } at about 3/5 of the travel distance through the assembly
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH