How about reversing the handle turn direction?
Still, the replacement stem doesn't fit the "broaching" on the end fully, but that's not enough to send me back to the parts house.
Least fun was to figure out that my most final tightening of the big cap nut is what it took to get full shutoff.
As a side note, the damn ancient cutoffs on the riser are just barely doing their job, and the one on hot side almost completely quit on me this Friday PM.
Did I mention what joy I find in plumbing work?