QTR-Quadtone RIP

Greetings - 

Thanks in advance for anyone who can offer advice towards resolving this issue. 

Haven't used QTR for a couple of years, and recently downloaded the latest version, 2.7.0.0. Running on a 64-bit Windows Server 2008R2, with 8GB RAM. 

Using the QTR GUI, when I attempt to print a file edited in Photoshop CS5, I set the width to be exactly 6 inches. It seems to take, but upon further investigation, there seems to be a requirement that the  image size exactly match a whole number percentage, as opposed to a decimal percentage. For instance, changing either the height or width of the image will move Scale from 20% to 21%, but exactly 6 inches in width lies in between the the 20 and 21 percentage points. And so QTR adjusts the image size (without any notification). 

When setting the width to 6.0, QTR changes it to 5.85, which matches 20%. The 21% size is 6.14. Can't imagine that this would be acceptable to anyone, and so I'm wondering if it's a result of my specific environment. 

Prior versions of QTR did not appear to have this issue. 

Anyone else encounter this, and if so, attain any sort of resolution? I generally need to print images in 3 sizes, and have always been able to avoid the maintenance nightmare of 3 separate copies of each image. 

Thanks again --

Ned Otter