Desktop Publishing :: EPS problems converting from Quark 7 to 6

Desktop Publishing :: EPS problems converting from Quark 7 to 6
Having really annoying problems with EPS files in Quark 7. I have a file with a cutter guide in 7, then down-save to 6 and then open the file in quark 6 to check it's ok. Quite often the eps file has re-sized itself and gone out-of position. Its background often goes white too, but there's no actual white background on the eps file. The problem also happens using Markztools when converting to version 4. No one on the Quark site seems to have any suggestions so wondered if anyone here would know. Thanks - Read More at This Link..
http://software-robotics.com/graphic-design-prepress/viewtopic.php?p=6657