Word2002 page order switches (1,2,3,41,42,43)

I haven't been able to locate this specific problem in
the troubleshooting database or newsgroups so hopefully
someone can help.

I'm using WinXP, OfficeXP and a Laserjet 1200se. I'm
trying to print a number of 56 page manuals and had found
that the best way to do it was print 1-56, odd pages,
turn over and print 1-56, even pages, reverse order. This
seemed to work best for the first 15 copies or so.
Suddenly every 3rd or 4th copy when I'm printing the even
pages in reverse order (so the manual is nearly
completed) it prints from 56 to somewhere around 46 and
then jumps to around 32, just omitting those pages
between 32 and 46. It ends up printing all the way to
page 1 but 10-15 of the first side prints are still on
the printer because of those missed pages and most of
what printed is trash. I'm doing the manuals one at a
time now, printing the same file, just going in and
resetting the print attributes and hitting the key so
whatever happens should be consistent and it's not. The
problem itself isn't consistently occurring and when it
does the pages that get ommitted aren't consistent
either. I'm using high graphics so I've wasted a great
deal of toner and time already and have half of my
manuals printed with 25% becoming garbage. Can anyone
assist with this? Oh, I have most recent software for
printer, Office and WinXP.
Thanks!