Russell Findlay agrees he can be a very difficult man.An obsessive drive to get the bottom of things during almost 30 years as a journalist made him a few powerful enemies.His confrontational ethos brought dozens of criminals, crooked lawyers and disreputable politicians to public attention.But life was turned upside down two days before Christmas 2015 when a hitman disguised as a postie turned up at Findlay’s home and threw sulphuric acid in his face.Luckily, violent William “Basil” Burns, also