In my previous post I cited that the Highballer locomotive stuttered on the straight track only. After taking good advice from Banner & RAM I've cleaned the locomotive and then ran it backwards. Contacts are good.

While the locomotive runs well backwards on both the straights and curves it continues to stutter going forward, mainly on the straights. Why does it do this? Thank you for any suggestions??

Dear tiger,
There may be a rough spot on a gear. Lightly lube the locomotive and run it at moderate speed for an hour or so and see if that helps. If not, contact the service department.
Have fun!
the Bach-man