For anybody who's interested I've got a Stihl MS 250 Wood Boss, great saw but I'm stuffed as to how to hand sharpen the chain with the file and gauge that Stihl provided, nothing I did could get the chain back to the same level of sharpness as it was when it was new. Then I was put onto the Ozito Chainsaw 85W Chain Sharpener OZCCS85WA that was available through Bunnings. I've just used it for the first time, setup instructions could be better but with a little thought I got it setup, sharpened the chain in under 10mins, back on the saw for a test run through some well seasoned ironbark and bugger me if it isn't as sharp as the day I got it, wasn't real sure about Ozito as a brand but this thing did the trick no prob's. I actually can't wait to blunt the chain again now so I can sharpen it again.
Dave