Joined: Jun 2009
Posts: 2,242
Likes: 1,659
From: PacNW
Bikes: Dinucci Allez 2.0, Richard Sachs, Alex Singer, Serotta, Masi GC, Raleigh Pro Mk.1, Hetchins, etc
0.833 X 25.4 = 21.58 mm
I would certainly try and see if a French sized stem (22.0 mm) would fit.
at least as a 1st step - rather than "upgrade your fork"
/markp