KEY DEADBOLT LOCK--DID NOT COME WITH INSTRUCTIONS FOR ---How to adjust tail to fit 2 3/4 opening. I/m 72 female and don't no how to do this---I bought a set (outside locks)--w/ione being a door knob-keyed--GOT THAT OK--SIMPLE--but top keyed--turn knob---wont move--and with no instructions to follow---? Please help-----this is the 4th set I bought---the others were cheap to begin with--so I took them back to WALMART---and Lowes