I've seen the rounding errors in the calculation back and forth. A bigger bother for me is the error with recording infant head circumference. If you measure the infants head in inches, then forward the chart, the chart will show the same number in cm. I think this only affects 4.0.73 though and I sent in a bug report and got the Angels to acknowledge the bug.
So maybe they'll fix the rounding errors at the same time.
