Well... I've gone to half a dozen stores around the city and none of them have P-Clamps in the size I need
(about 1-1/2" diameter). A couple even checked to see if they could have that size sent in from another store, but of course it looks like they've completely stopped carrying them.

So, I've given in to trying another solution and ordered some mounts from Velo Orange...

http://store.velo-orange.com/index.p...es-4mm-qr.html
I'm not entirely sure how everything's going to fit yet but at least a potential solution is on the way. At the least, I'll be able to angle the mount down or up to adjust where the stays are connected.

Finally, I'm a little concerned with making my nice new bike look "ghetto" with a weird hunk of metal being used to mount the fenders, but I'm thinking a little black fusion spray paint should hide it well enough.