Yes, I did already touch on that subject. I don't think any body should expect different versions to show the same results, and I would expect most people know they don't. They are creating a utility that gives general results based on many different factors, and have to take in to account all the differences in instructions and processors to create a single utility that can give reasonable results that provide clarity in estimates. In all honesty, if making changes to scale, for e.g., provides better results, then that's a good change. I mean, it's got a data base included with each revision, and the chosen processors are clearly there for a very specific and well thought out reason.