Question on DCC wiring. I have a loop, with a spur to the inside. I have a switcher on the spur, and a loco running around the main loop. When I throw the spur switch (I’m using a Peco insulfrog turnout), I can pull the loco onto the spur with no problem, at which time the switcher also runs. But when I return the loco to the main loop, and throw the switch so it runs continually around the loop, there seems to be no power to the spur and the switcher doesn’t run. Do I need to run a power line to the spur as well as the main loop? Or do I need a different kind of turnout?