The ornamental design for a poolcuecoupling with tunablecoupling insert, as shown and described.
FIG. 1 is a top plan view of a tunable coupling joint for a pool cue
showing my new design. The undisclosed opposite side being identical;
FIG. 2 is an end view of FIG. 1, the undisclosed opposite end being
identical;
FIG. 3 is an exploded perspective view of FIG. 1; and,
FIG. 4 is a reduced top plan view of FIG. 1, the broken line showing of a
fragmented broken away pool cue is for illustrative purposes only and
forms no part of the claimed design.