In some embodiments, the invention comprises {TAIL ~ upper and lower output rollers} fixedly mounted in relation to {HEAD ~ the front stop mechanism} and translatable therewith 
In some embodiments , the invention comprises { TAIL ~ upper and lower output rollers } fixedly mounted in relation to { HEAD ~ the front stop mechanism } and translatable therewith
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH