I am planning a layout and want to have a siding with several locomotives. Does the Bachman track with insulated gap work as a block so I can have power to the layout the the engines will not move unless i add power or do I need to do wiring as a block. How does the insulated gap work and what does it attach to.  Sorry I am new to building a layout so the question may seem dumb. 

What should you do if you put to many drops of smoke liquid into your HO engine and it stops smoking. It was working before.