No trouble at all finding this, which probably wouldn't have been the case without the signpost and way-marked path! Although the stones are small, this is a perfectly formed little Four Poster with what would appear to be an attendant outlier as well.
The feeling of remoteness here is out of all proportion to the effort required to attain it, so this is well worth the effort if you subscribe to the theory that big isn't necessarily always better. Perhaps it's the minimalist in me, but I feel that often true quality is self evident.
The track actually continues to ascend a small hill bearing a prominent cairn.... but lack of time prevented a look this time around. More's the pity.
There's now (August 2006) a marked track leading to the circle from the gate into the field, near the 2M milestone SW of New Luce, so it's much easier to find first time - no need for GPS! A sign at the gate reads: standing stones 500m. The first marker post is visible from the gate, right in front of you, at about 80m. Cross the burn and carry on following the same contour (north) to a second post about 100m further on. A third post should then be visible about 100m up the hill (west) and the ring is about 200m+ further on. At present, the circle is about 1 metre or so north of the track (on your right). If you reach the fence / gate then you've overshot by about 70m.
Burl describes this as "a delight to see". I suppose it depends on your view on four-posters.
It must be one of the smallest (2.4m x 2.7m) and least imposing (in terms of stone size) of all stone circles so maybe that makes it distictive enough to want to see it.