Just for anyone who is trying to do this... Be very careful that you don't snap the lever, because despite its importance, it seems very weak. I figure this is the same on all Unos - as its the same on mine and a friend's Uno 55. The handbrake cable is held in by a bolt, which through the bottom end has a split pin - except the pin has some sort of washer on it. Basiclly, the washer is hinged on the pin, and the only way to get it off is to scrape all the mud and crap away, and clip the pin with a pair of sidecutters or similar. I've never really seen these before, but they seem like a bad idea, because if you want to take it off, you need to get another - and I can't find them anywhere - so I put in a 10mm bolt with a washer either side, and it seems to work properly.