Thanks Fubar, good tip! I didnt look at Ventana, I might just buy a kit from them, especially if I can get the proper tool.
I wouldnt mind having a hardtail again, but I'm only allowed 1 bike, so the Cinco is it. I do commute to work on and ride it just about everywhere. Whilst I do strip it down and clean it at least once a week, I can accept it gets alot of use, through creeks, mud, snow, hucked off logs and boulders etc.... so I consider it reasonable wear 'n tear. I've got no question about quality of the original parts or anything, they've been great.
Fortunately we're in summer now, so look forward to some good riding weather.
DavidB - I did pop the seal off for curiosity, the grease was a dark grey color and had a sandy texture, so it looks like over time some junk has got in there. I am conscious not to use a pressure washer with the bike, so I'm assuming its from shinkage of the seals, cold icy water, or snow might be able to shink the seals enough to let some rubbish in ? (I'm no engineer, just guessing)
I did think about re-packing the original units as they were only just starting to jam up, but the inner "hole" on most had some surface rust, and I didnt want to file it away in case it changed the size/shap and became a loose fit. Actually, looking at them, the lower pivot near the BB were much worse than the others, I probably could have only replaced these, but a whole fresh set means its all fresh and ready for action. :)