Character alignment in Devanagari

[Manjunath Sripadarao <manju paqrat com>]

Hello,
 Here are some screenshots of my font rendered in gedit at different 
font sizes...
http://www.ece.uic.edu/~msripada/delme/2-16.png
http://www.ece.uic.edu/~msripada/delme/2-18.png
http://www.ece.uic.edu/~msripada/delme/2-20.png
http://www.ece.uic.edu/~msripada/delme/2-22.png
http://www.ece.uic.edu/~msripada/delme/2-24.png
for 16, 18, 20, 22 and 24 sizes respectively.
  All the characters are of the same size, but somehow they are not 
joined along the same top line
like it should be in devanagari. For example in 2-24.png, the jra 
character is below the kra character
(last line, last but one and last one). Where as in the image 2-20.png 
all the characters in the third line occur
at the same height. Is this a problem with pango ? For reference the 
font is available at
http://www.ece.uic.edu/~msripada/delme/Devanagari.ttf.bz2

Thanks in advance,
Manju