Had to dig deep to find this thread!!
After finally biting the bullet, I've installed a 0.2 mm nozzle in my Makerbot Replicator 2.....and half a day later and around 12 iterations to get the settings to a point where I can get a print to complete, I've printed my first hires T Gauge loco shell.
Here's a couple of shots of both the new shell (printed at 0.05mm layers with 0.2mm nozzle) and existing version (printed at 0.1mm layers with 0.4mm nozzle):
Don't be fooled by the size of these mini beasts. They're only 7.3mm wide and 38mm long.
The settings profiles for each of these prints are tweaked from the default Makerbot settings, to ensure they actually print, and to make sure I could get them off the build platform undamaged!