I've recently installed a RCS 31 Wye switch in my otherwise entirely Atlas O layout (my first experience with Ross switches). Every time a lighted caboose goes through the switch, it sparks on the tip of the non-converging switch point. It seems the wheel flange riding the outside rail barely touches this non-converging point and creates a momentary dead short. I thought both the outside rail and both points were the ground leg of the system, so I'm confused. I've temporarily worked around the problem by placing masking tape on the last 1/4 inch of the point.
I'm running exclusively DCS and have otherwise had no running problems.
If this doesn't make sense because I'm not explaining it well, I'll post a few pics soon. What am I missing here?