Thanks for the tips!
I just thought of this...with regards to powering the Menards buildings (which require 4.5 volts) would harm result to them if the voltage was lower? Since some of the LED lights are very challenging to get to (to paint) was wondering what would happen if I reduced the voltage even more? I don't imagine any damage would result for buildings with just LEDs, but what about those with blinking signs (that may have some sort of circuit)?