22.2mm to 22mm stem conversion

if that is the case, you would be hard pushed to make it fit?? it's like putting a 27.2 seatpost in a 27 seat tube. it would be hard to get in.

That's why you sand it down! ;-)

Seatposts are easy to find in all sizes.
There's not the greatest choice of French stems out there so sanding down a quill to fit is a good solution. There's info on Sheldon's site.

It's very easy to do.