IBfishen2,
Outside of Grande Ronde your best bet is to get on Stimson's tree farm on the weekends when they got it open. Also try up Gopher Valley Road outside Willamina. Wey. Co and Boise have some newer cuts about 8 miles up I believe (I laid out Wey. Co's cuts), if you know where Elk Flats Road is, there are some gates up off that road. Just walk up into those newer units and I bet you'll find something.
As far as the Siuslaw; email me and I'll see what I can do for you. My tree farm takes in 125,000 acres of the Siuslaw Unit; I know where some bucks are
From the land of Big Sticks,
Osulogger