I have an atlas N scale Gp-38 loco. when it goes over the insulated frogs on the turnouts from atlas it seems that their wheels are too wide and either get stuck or it will lift the engine off the track a little bit, then it might derail. BUT i have life like engines both used and dont know how old and they have no problems going over the turnouts, except the occasional little sputter due to atlas's or mayeb the build of the turnouts electric workings. Any suggestions, id hate to replace them cause its a pain BUT, if u have suggestions or even ways of modifying the turnouts either by hard wire or something PLEASE post. thanks a lot