I'll bet this topic has been posted before, but the Search feature didn't bring up anything quite like what I'm trying to find out, so at the risk of repeating 'common knowledge', I'll start a new thread. Simply put, if I'm using a Peco Insulfrog power-routing turnout at the 'throat' of a reversing loop, what else do I need to do to deal with the "polarity problem"? My new layout's Phase 2 plan calls for two reversing loops and I've never done one before. I've read a bunch of the literature, but none of it addressed this situation. Info: HO scale, DC power, Atlas Code 83 Flextrack and Peco Insulfrog power-routing turnouts. Thanks for any and all advice!