Ok, so i took my chain of my bike, wrapped it round one of the cogs that comes on and off freely, then wrapped the chain whip round the cassette, held the chain and was pulling on the whip for a good 5-10 seconds, and it wont move. Hands dirty? It looks like i've painted my hands black. Just been at this so long and i've just lost the will to do it. Will go and try doing each cog one by one in a second, incase the pins have gone holding it all together. Although, the chainwhip keeps flying off, which doesn't help. UPDATE: I got the cassette moved around 6-7mm freely, but after that, it just wouldn't move, so i'm guessing the body has a shard or something, and the cassette just wont fully come off. Will try and get Lee or Bren to help tomorrow as they've done this shit before and might be able to help me more.