exact dimenions of pdf/png

[Peter Van Kranenburg]

Dear all,

I have to provide a bitmapped image to a publisher:
1200dpi, width: 11cm. It only contains one system.

This implies a width of (11.0/2.54)*1200.0 = 5196 pixels.

I followed the directions from the 'usage' manual, and I put this on top 
of my source file.

\paper{
  indent=0\mm
  line-width=110\mm
  oddFooterMarkup=##f
  oddHeaderMarkup=##f
  bookTitleMarkup = ##f
  scoreTitleMarkup = ##f
  ragged-right = ##f
  ragged-last = ##f
}

However. The resulting pdf has a width of 11.19 cm, and the png a width 
of 5283 pixels, which is too large.

I tried to add:

  left-margin=0\mm
  right-margin=0\mm
  paper-width=110\mm
  check-consistency=##t

Then I get a width of 11.15 cm.

How can I set the with of resulting pdf at exactly 11.0 cm?

Thanks!
Peter