I am curently laying track for my new layout, as I install a turnout I run my test cars througth the turnout. Here is what is going on. I am installing Peco code 100 Large #6 insulfrog turnouts, my test cars are two Athearn / Bev Bel heavyweight passenger cars with three axles per truck, plastic wheels. The lead wheels of the first truck ride over the frog and derail when the turnout is set to the diverging route. It does this on all turnouts. Any car with two axle trucks run through the turnouts just fine. Should I consider just switching these cars to better quality metal wheels? If so which brand? Do I have to worry about causing short circuits as I will be running DCC. Or is this a problem with these Peco turnouts? Thanks for any suggestions.