DVDx - DivX problem...result bad/small files

[sonic_emperor]

i tried to encode my "Shade" dvd using dvdx as i always do...and first i get warning that log file exsisted and if i wanted to overwrite it...click yes ...start!
first pass everything looking fine,but second pass i get estimated filesize 178MB(!?) and i wanted to make round 1400mb file(i set divx bitrate at 1550)...at the end i got 184mb file,which,offcourse,doesnt work!
I thought it had something to do with divx settings,but everything seemed fine...
please help me with this one!