In some embodiments, systems also include a reset protrusion disposed on {HEAD ~ a distal end} of a flapper shaft connected to {TAIL ~ the flapper lever} 
In some embodiments , systems also include a reset protrusion disposed on { HEAD ~ a distal end } of a flapper shaft connected to { TAIL ~ the flapper lever }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL