This is a brilliant guide for cleaning them by the way - viewtopic.php?f=115&t=14018
Basically it made a huge difference, it's got a little more noticeable power and runs so much smoother than before.
I found this guy who had probably been in there quite a while!
![Image](http://i839.photobucket.com/albums/zz314/Smousley1995/image_zps95d64c7b.jpg)