While some folks have said the Axe doesn't have a break in period, others have said the main spring and regulator spring do need a few cases to settle in.
That being said, I bought mine used partly for this reason (and for cost, of course) so I never experienced any reg creep issues or erratic velocities.
Originally Posted by stratmastertj
I really wish they made the relay reg/asa easier to service. Mine's been recently having some slight creeping issues. Was fine the first couple days I used it.
I've disassembled my reg a few times and the hardest part was just getting a hold of a 3mm hex driver and Dremeling a notch in a flathead screw driver (which was actually kind of fun).