Abstract: A method and apparatus for adjusting the relative position between a pair of elongate, tubular shafts using an adjustment mechanism having a wedge element operably moveable along a ramp by shifting of an actuator member. The adjustment mechanism is configured to reduce binding thereof by supporting the actuator member in more than one location to maintain desirable contact between the wedge element and the ramp and the inner wall of the one of the pair of shafts, providing for an increased range of movement of the wedge element along the ramp to prevent undesirable frictional engagement between the actuator member and the ramp, and by providing a stop to substantially maintain the wedge element from unintentionally withdrawing into the inner shaft and wedged therein.

Abstract: There is provided a method and apparatus for adjusting the relative position between a pair of elongate, tubular shafts using an adjustment mechanism having a wedge element operably moveable along a ramp by shifting of an actuator member. The adjustment mechanism is configured to reduce binding thereof by supporting the actuator member in more than one location to maintain desirable contact between the wedge element and the ramp and the inner wall of the one of the pair of shafts, providing for an increased range of movement of the wedge element along the ramp to prevent undesirable frictional engagement between the actuator member and the ramp, and by providing a stop to substantially maintain the wedge element from unintentionally withdrawing into the inner shaft and wedged therein.