Howdy all! I dusted off the Zephyr and built a fresh programming track so I could do some programming. Atlas flex track soldered to two 22g leads. Leads correctly attached to PROG A and PROG B. I'm trying to do some speed matching on Atlas factory AN12AOs in Dash 8-40CWs. I keep getting error messages: Mostly dnd, but also dnA and dnr. The dnd indicates an "open circuit". I've changed CV29 a couple times, but now I can't seem to do much without shutting it down and trying again, etc. This is far too frustrating. The unit is old and has gone to Florida at least twice I can remember. Any ideas on what I'm doing wrong? The locos are 8 years old; could there be a decoder connection issue in them? They run like champions, although I can't get the ditch lights to work either. Thanks in advance, and Merry Christmas!