Got my POTCLE last week. The upper playfield back bracket broke in shipping and JJP shipped one out to me right away. Put it on so that works fine, and now I find the Tortuga VUK opto is stuck on, except if I raise the playfield it goes off. Seems to work fine in any service position, but as soon as I start to lower the playfield into the cabinet, it comes on. All the wires on it seem fine, and since it works when up it is puzzling. Any ideas?