I could use some advice with an issue. I have tried all of the tricks that I can think of. Whenever I run my dad's 726rr steam engine on my layout, it wants to stop whenever it run overs two fastrack switches. The two switches are back to back. They're also in the main layout loop. The main layout loop is approximately 20ft x 8 ft. One switch allow the engine to enter a small freight yard that I have created. The other switch will allow the Engine to run into a 8 ft x 4 ft extension that I built last year. FYI, I used some newer Lionel Tube Rack and some re-built O22 Switches for the extension instead of buying more fastrack. I have three power connections on the main loop that is 20 ft by 8 ft. The power connections are fed from a Main power rail that runs around the entire layout, which is connected to a MTH Z4000 Transformer. The two power rails are 12 AWG wire. I have also solder jumpers between sections of fastrack as recommended by lionel for smoother operation. The extension also has one power connection on the incoming track and three section power connections that are controlled via a couple toggle switches. I have checked taken all of the cars and engines off of the track. I then checked the track power with a volt meter at multiple locations around the entire layout. The voltage fluctuates roughly 0.1 to 0.2 Volt. Any suggestions?