I love that on the V2100. Each paper has its own alignment and for the most part they are really good. Few clicks and 10 sheets later I have the closest registration I have ever had digitally.I agree with using the Print Engine to set paper/tray alignment per paper would be the way to go. I suppose some printers are still not capable of a alignment settings for each paper like what is available on the Versant 2100, Digital Press 800/1000. I know years ago the custom paper setting were rather limited in the Xerox 700 and earlier series. But, if your print engine is capable that would be the best way to do it.