I must be missing something concept-wise? Does newer Lionel brand American Flyer not support inter-working with original American Flyer track and American Flyer switches? Pic attached shows my mis-understanding circled in red. The Lionel GP9 doesnt appear to use trucks wheels for electrical pickup, instead has 2 individual track pickups, one for each rail. But American Flyer switches (wide variety of year and model numbers) have a plastic piece at end of frog that is wider than the GP9 track pickup. The steamers always have one of the wheels on either side of the plastic end-of-frog, no issue loosing electrity. But at slow speeds the GP9 always loses electricity and stops every switch and needs hand-shoved across. At high enough speeds it can get across. But this is a yard I am attempting to model with the GP9, not high-speed running. Any ideas about what I am missing concept-wise? Seems I would find some discussion on this topic on train boards but I havent located it yet. I have always run AF Steam, but from my n scale got interested in yard operations so setup a large classification yard with dual end ladder and 20 switches with my S gauge. Since AF Steamers didnt have front couplers decided to buy a '94 American Flyer GP9 diesel and its from Lionel.