Anyone recall if the front Sonic hub on older HED wheels (about 2007 vintage I think) are adjustable? Looks like a simple (female) threaded center axle with screw-on axle caps on each side which contact the inner race of the cartridge bearings. Removing that axle finds that the hub has a (6901) cartridge bearing press fit into each side. For assembly it seems like you screw in the axle caps until you contact those inner races, but do not overtighten (which could distort the bearings). No other 'adjustment' possible. Am I missing something?