Does anybody have the WP manual? Tried searching but no luck.

Any tips or links on a DIY fork service would be appreciated!

I found this to be a useful source of information ..
http://www.ktmforum.co.uk/technical-how ... forks.html

I bought a set of these to undo the fork caps ..
http://www.amazon.co.uk/gp/product/B004 ... detailpage

The bottom of the rebound adjuster rod on one of my forks was crusted up with gunk, which was probably affecting the rebound adjustment. I cleaned that which has improved things.

This video is for a different set of WP forks but has some good advice ..
https://www.youtube.com/watch?v=glG3gUj ... CE02459978

Perfect. Big thanks to both of you for that