Hmm - I'll have to try the F/Wire connector...
Re the CircuitWriter Pen: I got mine from the local (Australian) RadioShack equivalent - JayCar Electronics
*BUT* It is made in the USA - Its CAIG Labratories brand, which is at http://www.caig.com
but the specific product family seems to live at http://www.deoxit.com
. Maybe just send them an email ?
JayCar sell online too, and the two or three I've bought from there have always been fine - so you could just order it online anyway...
EDIT: The US Details for CAIGis:
CAIG Laboratories (Poway, CA), (800) CAIG-123, email@example.com