Yeah, I just read someone saying to be sure to use the 3mm hose.
I really don't want to throw money at this, but I guess I could try a new egr valve. Mine is definitely not fully plugged but it could be not letting enough exhaust through. With a baffle in place I certainly should be getting a stumble or stall when applying vacuum directly to the valve.
My understanding is this does not take a lot of vacuum to actuatate. And I sucked pretty hard, haha