Hi, Well for the first time today, I got down and cleaned my bike chain, along with an adjustment to bring the chain slack in to the 25 to 35 mm region... Anyway, lots of scrubbing with a tooth brush and kero and after about an hour I got myself a clean chain :grin: Gave the rear sprocket a good scrub and took off the front sprocket guard and checked it out as well... Anyway here is my question.. during the cleaning process I managed to get kero on the rear tyre, will it harm the tyre? I hope not, I simply gave the tyre a wipe down afterward with a rag... Also, on taking off the front sprocket guard, I cleaned out what appeared to be an excessive amount of lube build up that had settled on the bottom of the sprocket housing... but now that I think about it... is that stuff ment to be there? There was a fair amount and it, and towards the bottom of the build up it was mixed with dirt. I assumed it was just lube that had been thrown from the chain and built up over the kays the bike had been used (24000 now). It was fairly sticky and I had to scrape it out with a flathead screwdriver! Any help appreciated!