Excellent, thats what I was thinking. I guess I had a lack of confidence in my knowledge. How does the following sound? If I print a step wedge on the inter-positive and note the last step that shows density before going to paper white, then when I print the inter-negative the step wedge should reverse and when that step (the one right before paper white on the positive) prints as the step before the blacks block up to full black then the image should be properly reversed. Does this sound like an accurate way to approach it?