Wow you guys kick ass,what kinda crap is that ,that they dont tell you in the manual that the center ball is adjustable????Vafactor is correct the holder that retains the nuts is 1 mil. longer so the nut can slide forward or backwards.I looked really close after my last race because I thought it should be adjustable,guess my eyes cant tell a mil. of difference.So from now on I am gonna remove the deal that holds the springs and check that frequently.