Betts - In case I don't see you this week, I found out the deal on the new rear hubs with the different hole positions:
UM519 - New rear hubs for RB5. Supposed to be a stronger material (uses "top" hole).
LA252 - New rear hub for Lazer SP (uses "middle" hole)
I guess I needed a 519, and got a 252 from ya.
Gary