Certain exemplary embodiments of the present invention is to provide a lock key adjustment system, the system comprises a lock cylinder, tablet cylinder includes a cylinder body, is disposed in the cylinder body, a plurality of pins and said a plug assembly including a plurality of racks one-to-one correspondence to reposition the plurality of pins, and a aperture receiving rack alignment tool as defined by tablet cylinders, rack alignment tool, a base plate, a plurality of and a spaced elongated prongs, each prong in the prong plurality of comprises a first longitudinal end that is adapted to correspond to engage one of said plurality of racks, the plurality of each of the prongs in the prong is lengthwise dimensioned to be relocated to a first predetermined position of one in which the corresponding plurality of racks, a predetermined position of the first of the plurality of racks is common to each, each prong in the prong plurality of comprises a second longitudinal end portion connected to said base plate, said rack matching tool is not engaged with the pins of the plurality of It is adapted to restrain the carrier assembly including a plurality of rack in the disengaged position. This summary is emphasized that the searcher other reader quickly, given as to comply with the rules requiring an abstract that allows to check the contents of the technical disclosure. This summary is submitted with the understanding that not used to interpret or limit the area or meaning of the claims.