I have an interlocking problem where, in a relatively small space are located  8 track switches and 7 entrances and exits in and out of of the plant.  Also it looks like I will need 18 signal heads to control movements within the this space.  I am modeling the the B&O with a junction with NYC at this point.  One signal (S1) will be NYC format the others are B&O.position light signals.  The B&O also uses marker lights,white, blue, and one called lunar white as well as the red, yellow and green.  The marker lights, with as man