If the ground is brought into the switch through the entering side adequately then the extra pin is not a real problem. Note that the ground on the out bound tracks after the switch also need ground and it is not coming through the switch so there needs to be a connection somewhere on that side too.
Since ground is coming in from the single track on both outside rails, you should be able to follow those rails tot he other end and if there is no break in the rail, these are the ones that do not need the pin. If there is a break in the rail as there is on the curve track of an 022 switch, then that is the one that needs the pin.
I probably have the wiring diagrams for the uncouplers. There could be a broken wire or a bent contact in the controller. Or the little insulator that makes the contacts behave correctly for the button being pushed could have come out inside the controller. Take the controller apart and see if there is continuity to the copper contacts. Be careful to write down how the posts of contacts go together if you take them apart but should not need to for continuity. check that the connections connect some of the terminals. if not the problem, then check from the contacts to the rails.
Scott
I'n in the process of cleaning up my electrical items and have a question about the 1122 and 1122-E differences. I know the older ones have the segmented rails and do not need the insulated pins on the inner rails. However my controllers seem to work OK even when I put pins in the early 1122s thus insulating BOTH ground rails. The E type are no problem and both types are switching OK so far. But have I eliminated the derailing capability in the early ones by adding the extra insulated pin and should I remove them? I see that I have no ground at all coming into the switch from the EXIT lines. Does that matter if I have a ground coming in from the ENTER side? What if I am coming from the other direction? Any info appreciated. I also have some questions about repairing some 6109 uncoupler/unloader tracks. I have one that only unloads and another that only uncouples. The controller seems to be according to the diagram. Do I have a short in the track? Thanks. Don Newman