So one thing to share with anyone who is thinking of doing a rebuild, no matter how much you think you have drained the oil, you havent and loads more than you ever expected will continue to come out.
When I removed the oil level sensor over 500ml, which I was able to catch after it went over me, my son, the floor, the engine stand, basically everywhere of the darkest, smelliest, blackest oil came out
Left is the oil when I drained the engine and right is the oil that came out of the oil level sender hole and it stinks, not just of fuel, but something else I cannot figure out. Dont have smellavision unfortunately