Worksheets won't print centered when a chart is embedded.
 

When printing a worksheet with an embedded chart, the worksheet will not
print centered, but is shifted left approx 1/2" in print preview and on the
printout. Even though "center horizontally" is checked on the margins sheet
in Page Setup. The chart has been sized to match the worksheet. Removing
the chart allows the work sheet to print centered. Adjusting margins has no
effect on the problem.