Peco Insulfrog Nscale Turnout & Derailments

[Herc Driver]

Good point...and another thing I'm going to check out. To me, it seems like the frog is set too high. Although it appears flush with the rail heads, I'm thinking it is 1 mm too high as the trucks pass over the tracks, causing the underside of the truck assembly to bump up and ride on the frog. But looking closely at the guard rails, they too might be too high.