A detent alignment mechanism assembly, comprising: a shaft , which is configured to be pivoted about a pivot axis by an operator, and which comprises a handle portion at a distal end opposite the pivot axis; a lock mechanism configured to selectively occupy an unlocked position, in which the shaft is pivotable about the pivot axis, and a locked position, in which the shaft is immovable and not pivotable about the pivot axis, wherein the lock mechanism is provided as a spring-loaded lift mechanism disposed on the shaft and thus includes a body , a lift handle that is connected with the body and a biasing element , wherein the biasing element biases the body away from the handle portion , and wherein the lift handle is disposed proximate to the handle portion so that it can be gripped by the operator such that the lift handle and the body can be drawn together toward the handle portion in opposition to the bias provided by the biasing element and such that the lock mechanism can selectively occupy the unlocked position as aforesaid; a detent mechanism coupled to a first portion of the shaft and formed to define detent positions for the shaft to assume with the lock mechanism selectively occupying the locked position such that the detent mechanism is engaged and for the shaft to move between with the lock mechanism selectively occupying the unlocked position such that the detent mechanism is disengaged; and a detent alignment mechanism coupled to a second portion of the shaft , which is radially interposed between the first portion of the shaft and the pivot axis, the detent alignment mechanism being configured to provide to the operator feedback and assistance corresponding to assumptions of the detent positions by the shaft during pivoting movements about the pivot axis thereof by the operator, wherein the detent alignment mechanism comprises a plate formed to define pockets and a detent element biased toward the plate , wherein the pockets are aligned with the detent positions. a shaft , which is configured to be pivoted about a pivot axis by an operator, and which comprises a handle portion at a distal end opposite the pivot axis; a lock mechanism configured to selectively occupy an unlocked position, in which the shaft is pivotable about the pivot axis, and a locked position, in which the shaft is immovable and not pivotable about the pivot axis, wherein the lock mechanism is provided as a spring-loaded lift mechanism disposed on the shaft and thus includes a body , a lift handle that is connected with the body and a biasing element , wherein the biasing element biases the body away from the handle portion , and wherein the lift handle is disposed proximate to the handle portion so that it can be gripped by the operator such that the lift handle and the body can be drawn together toward the handle portion in opposition to the bias provided by the biasing element and such that the lock mechanism can selectively occupy the unlocked position as aforesaid; a detent mechanism coupled to a first portion of the shaft and formed to define detent positions for the shaft to assume with the lock mechanism selectively occupying the locked position such that the detent mechanism is engaged and for the shaft to move between with the lock mechanism selectively occupying the unlocked position such that the detent mechanism is disengaged; and a detent alignment mechanism coupled to a second portion of the shaft , which is radially interposed between the first portion of the shaft and the pivot axis, the detent alignment mechanism being configured to provide to the operator feedback and assistance corresponding to assumptions of the detent positions by the shaft during pivoting movements about the pivot axis thereof by the operator, wherein the detent alignment mechanism comprises a plate formed to define pockets and a detent element biased toward the plate , wherein the pockets are aligned with the detent positions. <EOS>