In reply to paul_in_cumbria:
Clean using cam cleaner, Metolius cleaner is good but expensive, or Mountain bike cleaner is relatively cheap (i have Dirt Juice - other brands available).
Lots of (Metolius) Cam Lube (its wax not oil) on all those hidden bits, krabs as well as cams. A bit of gentle heat helps the lube into the cracks. It will drip before it gets cleaned up so lots of sacrifical (news)paper.
Easiest with all the soft stuff (slings/cords) off, and then new tape / cord.
If you hunt around you can get slings of any colour. Remember you can't knot dynema slings, and dynema cord requires a treble fishermans.
Post edited at 13:34