When I use infrared clean on C41 film on a Epson V750 running under Vuescan I get an apparent offset between the dust objects at the patch of photo to which infrared clean is being applied. In the final result I see both the healed spot and the dust object, with an offset between the two. My guess is that the registration between the visible scan and the infrared scan is off. I would appreciate any insight that can be offered. Thanks.