You're correct. You'll see a drop in oil pressure, a rise in manifold pressure and a drop in rpm as you coarse the pitch (move them towards feather). The reason you're on a higher rpm is that because below a certain rpm the props no longer increase/decrease pitch and behave just like a fixed pitch prop (when they're against their stops). They're designed to do this, or else they'd try to compensate for the dropping rpm by going to ever finer and finer pitch.
Last edited by AdamFrisch; 21st Sep 2012 at 22:21.