There's a guy over in Germany who restored an HLS 273!
http://www.zone-eins.de/f0c59c97e010590 ... /index.php
Look at the inner stator, it's got 4 bushings that reduce the clearance between the rotor and stator, that's pretty cool. He even has a test video.
http://www.zone-eins.de/f0c59c97e010590 ... /index.php
Pretty neat huh?
I don't know if the person who did this is on the board, but if you're on here, speak up! This is a really cool restoration!