Doug: Again, thanks for being here, listening and replying so promptly.
I have a few thoughts: I have a newer (inkjet) printer; I would have tested it today to see if it has the same issue, but it needs an ink cartridge. Newer may be good; the manufacturer (Epson) has been quite proactive in issuing drivers and firmware updates;
the Canon, great workhorse as it is, may be showing its age and Canon is clearly not blazing trails issuing new drivers for it.
Rotation seems like a strange fix; the orientation is correct - it just seems to be offset an inch or more. I will play with the styles and see if it can be fixed that way. Thanks for the suggestion.
For those who haven't been working with these kinds of issues since 1988 like me...MS should note that several people with different printers have had a similar issue with printing #10 envelopes specifically, and determine whether to chime in here recommending
a fix, or send the developers in to fix the problem in their program.
Jay