Numbers App changes margin settings when converted to Excel

I have been fooling with this for days and days. I have created a Numbers spreadsheet and have the page layout centered just right. As far as the preview in Numbers...the document should print just fine. I then upload it to iWork on iCloud to have access to it from work, iPhone, iPad, etc.. Here is where the problem begins. I download to a windows computer and open with Excel. When I go to print it, the margins are WAY off. The spreadsheet previews and prints with basically no left hand margin. I can then fix the spreadsheet in Excel and reupload to iWork thinking that it should remain fixed. Once I open the document in the Numbers app and do the process over again.....BACK TO SCREWED UP MARGINS!!!! Has anyone else dealt with this and found an answer?

I understand that they are two different applications, but you would think that they would play nice with one another.