Small update. Last month, I sent my Daytona off to the ZMeister for a parts swap. For anyone who has ever wondered about the difference between Ofrei pushers and genuine (slightly used) units, take a look:
That's the Ofrei pusher below. Yes, it's been knocked around a few times!
There is a difference here, though it's not noticeable until you get in close. On the gen the edges are sharper and the grooves are deeper. Dimensionally, there are no deviations that I can discern.
So is it worth the hundreds of dollars to upgrade to gen pushers? Eh... Sure.