Jerry,
I have replaced one set I got from Jon Bliesner of EMW. They are indeed better than the old ones.
http://www.largescalecentral.com/LSCForums/viewtopic.php?id=10680
I was getting ready to send 4 sets (8 trucks) to Phil Dippert for bearing conversions with Sierra valley wheel sets, but he’s in the middle of moving to Colorado, and doesn’t have any in stock.
I asked him to notify us when the move is complete.
All he needs is the side frames, so I guess removing the brake hangars from the truck is a moot point, after all.
http://www.philsnarrowgauge.com/services1.htm