Insulation spacer devices, methods and related construction techniques are provided. A barrel housing, a printed circuit board and a pendant lit by an LED element are mounted on the pendant. The shape of the arrester rings allows the force of gas flowing out of the well to assist in closing the rings. For example, the very dots on the media can be positioned in time-shifted fashion. Methods for forming the threshold voltage adjusted transistor are also disclosed. Optionally, a second dispersing agent may be employed in the polymerization, said second agent being a perfluoropolyether having at least one endgroup selected from the group consisting of carboxylic acid, a salt thereof, sulfonic acid and a salt thereof, phosphoric acid and a salt thereof.