Marty- Same results here. Percy has been doing hot laps on our layout for weeks. Not a single issue. However, I did turn off the electronic chuff sound. The kids go nuts when they have a chance to run the train. The green machine has travelled the equivalent of Washington DC to Cleveland without a hiccup.
However- is it just NE Ohio kids or do all of them run it in reverse 80% of the time at speeds that would allow time travel if Lionel installed Flux Capacitors????