ya just gotta figure that has to be a fact or yer gonna be in trouble somehow...... good dougrussell is gonna get ya hip. sounds like they know what dons said to be a fact too, that even new ones can be bad...... ie. offcenter, tilted, whatever..... i'm thinkin that as long as ya get the 4 point alignment, yer coupler most likely is stright with the world, with a crooked coupler, i'd guess that 4 points would be hard to achieve....It makes sense that the hub needs to be centered and true.