We have all had a nitemare gun to strip due to failure or fettling attempts. But after years of stripping guns I was handed a Walther cp88 by a mate that wouldn't fire, with limited help online I decided to have a go. After several hours and a lot of swearing I've finally got it working again, so many springs and moving parts that sprang out when pulling apart, what I complete bastard of a gun. What's yours?