Thomas, I get it, but seems like the giant elephant in the room.
art - I tried that but didnt get near the clarity of the scans.
From registering at DPUG and poking around, I think the problem is trying to scan film as a reflective document. I tried "film" setting, but it wont go full plate, only as big as the light on the hood of scanner. VueScan looks like it might allow it.