It was close to going bang on me but I managed to change it befor that happened, but I still cleaned it all out with card clean, that was the best thing to use I found.
I could not find anywhere online how the hell you get it out when it's all undone, I saw pic's of people taking the drive shafts out and all sorts !!! But it comes out of the hole where the exhaust used to be, as you need to remove it any way.