Dimension tool (rounding off numbers problem)

Hello and good day..  I am attempting to provide accurate drawings for quotes on some parts I need made.  When I use the dimension tool to save the time of hand typing dimensions I cannot get it to stop rounding up.   If I need a  .125 final size it always bumps it up to .13.  This just does not work for machining requirements.   I read an old post for Corel5 which I had already tried in my X7 which stated go to tools/options/workspace/edit.  I increased the drawing precision to 4 decimal places but it is still not working..  I closed the cdr file and reopened and it still does not create 4 decimals.  I re-drew a part and then tried it, same thing..  I draw a   .125 x .125 x .4375 and it says:  .13, .13, .44... pain in the brain.. 

How can I do this.. 

Another question.. after drawing a part in actual size. i.e. part above..  I want to expand the size of the drawing without changing the dimensions..  How can I do that?  I would like to print it very large but have not found away around that either..

thank you very much for your help and time.. 

Barry