Hi Tony,
The C8 is a great telescope. I've had mine for 10 years now and have been thinking of servicing it myself as well.
I've yet to try, but this is the best description I've found so far:
http://www.astromart.com/articles/ar...article_id=594
This also seems helpful:
http://www.ngc1514.com/Celestron/disassem.htm
And this is the most practical article of cleaning of optics (including corrector plates) I've seen:
http://www.arksky.org/asoclean.htm
Hope someone who's actually done this replies to this thread.
If not, hope these links help.
Have fun,
Doug