Seems there is a design flaw in that when you torque up the nut all of the pressure is being applied to the race as when i tightened, the drum became stiff to rotate by hand, and then 40 miles later failiure.
Bought a different set and they seem spot on, drum spins freely when torqued up etc etc
This post has been edited by ScubaSteve: 07 November 2010 - 06:27 PM