Nice! Quiet too. Three-position E-units are just about the most finicky aspect of postwar trains. Electronic replacements are available, and they are a definite improvement, even if they lack that nostalgic "buzz."
A trick I learned a long time ago that comes in handy for steam locos whose e-units may be contaminated with smoke residue... If you obtain some plastic-compatible contact cleaner- what used to be called "color TV tuner cleaner"- you can spray the e-unit contacts with it, and sometimes that will improve operation. Of course if the nubs are worn or something is bent from an inexpert prior "repair" this won't help. But the spray is a non-invasive technique that's unlikely to do any harm. It works for gunked-up motor brush wells too, but it's not a substitute for a careful disassembly and cleaning.
Make sure you get one of the spray cans with the long plastic "straw." On most steam locos, you can reach the E-unit even without removing the shell. For safety's sake, spray it outside or in a well-ventilated area away from sparks and flames. GIVE IT SOME TIME TO EVAPORATE FULLY before applying power.
Glad you got your Alcos running. Look forward to more updates as your Postwar roster grows!
