PDF Printing issues in PCadd 9

[RTCool]

I have a new problem today. My D-Size PDF documents won't print properly at 50% reduction on 12x18 on my Epson printer from either Acrobat or Preview. What I get is maybe 52%, so not to scale but close? Printing straight from PC works correctly. Absolutely frustrating. I can't make sense of it.

[patrickm]

You've probably already done this, but...
In the print dialog box, do you have it expanded to "show details" and verified that the scale is set to 100%?

[RTCool]

It's really weird and frustrating. Something about the printer. It seems to only happen with a PDF file reduced 50% to 12x18 paper, which is a custom paper size and "user defined" on the printer itself. If I print 50% straight from PowerCADD (no PDF in between), no problem! If I print 50% reduced to 13x19 paper (a standard, built-in paper size) from PDF, no problem! I remember years ago struggling with roll fed panoramas with full width 13" paper until an Epson rep at a trade show told me I had to spec it as 12.95" not 13", and that fixed that problem.