From I-77 and W Trade Street:
Start out going WEST on W TRADE ST.
Merge onto I-77 S / US-21 S toward ROCK HILL.  Go 4.3 miles.
Take the S TRYON ST SOUTH /NC-49 S  exit, EXIT 6B.  Go .3 mi.
Merge onto W WOODLAWN RD / US-521.  Go .6 mi.
Turn RIGHT onto OLD PINEVILLE RD.  Go .3 mi.
Turn RIGHT onto SPRINGBROOK RD.  Stocker Associates is on the left.