That's interesting, what do you mean by setting handle? Never seen a noritsu with such a thing myself, maybe before my time. On my noritsu I don't see how that would work, there is a drive motor that turns all the racks, if you slowed it down you would have extra time in all the tanks, which I suppose wouldn't matter but you would also have lower the dryer temp to compensate. Mine also doesn't have any ability to alter push / pull times.