@SteveH posted:Good call @John H on the O72 switch.
Alternatively, if 2x O31 Quarter curves (one with roadbed trimmed to fit the the O72 switch) were used without the 1-3/8" fitter, that would get the outside dimension down to about 7 3/8".
Well here is the pictures.....I cut the 072 switch so that the 036 half would fit. I also put a 1.38 dead piece in so I have the siding power by a different transformer. As always...need more space..