im sorry. i misread your post. usually its the damn domestic connection that screws everything up. it appears that uio-seems to be your issue. i assume CO only has one flight. they may have two, did you check that?

here's another option. book standard FC sfo-uio and sleezypass Y uio-sfo/oak.

then ask to be put on the FC waitlist. if standard opens, you should be able to just switch in. they may make you book in sleaypass FC and then redepoist miles if you are moved into standard, but i have heard that that scenario actually makes it worse becuase it takes a seat away in FC where as booking in Y still leaves it open and vulnerable to a downgrade to standard level.

I believe Channa is the most well informed guy regarding these situations. i bet he wouldnt mind if you pm'd him.