Without question. MY MTH PS3 Dreyfuss with NP tender. Lucky if I can get through 3 Atlas switches without the guard rail fowling things up. I have scaled wheels and shimmed guard rails. We are past that and just live with it. All others 24 or so engines are problem free. Sometimes quirky when getting smoke fired up after adding fluid. No biggie.
FWIW, My 2 Full Acela sets are the best running on my layout. Took about 18 hours of tuning and adjusting each set to get them perfect.