(This barely being able to get here during work anymore stinks...)
So last week I put a quick map together plotting the Scarborough region pefas...
http://goo.gl/maps/uxjP6East marker is Linn & Rueben, west marker is Quest & Kendal, middle marker is unidentified pefa.
And looking at it again, if it's one of "ours" it's more likely to be Quest or Kendal-they have been to Tam O'Shanter before just north of the mystery pefa