so at 19001km's I finally had a problem with the Hyo... Just left home, coming down to the intersection of queensberry and curzon street, change down a gear, and I am met by the sultry sounds of an engine, with no load. Thinking quickly I jumped up and down through the gears, to no avail other than assuring myself the Gearbox was still working fine. Roll down the hill Park the bike, and notice its dripping oil(really, a nice little snail trail back up the hill in the car parking area). So Tonight(2 weeks and 1 day later) I finally got down and looked at it and sure enough the Front Sprocket has decided to become a naturalist, and shed its outer clothing. The sleeve on the Drive shaft had moved out allowing oil to seep through, but I cannot see any other problems. Replace the sleeve back into place, and chuck the spare front sprocket onto the shaft to ensure everything feels right. Tomorrow its off to stevo's with the KY Jelly, or maybe staffords if I can get out there, and source a new Sprocket Retention bolt, and I am assuming either a washer or spacer specifically suited to the job. Now, I am going to do the oil change, rear sprocket and new chain. Rear sprocket, What is the best way to attack it? Also Any one know if there is any good deals on tyres atm, I need a new front.