Thanks for the responses. I think I'm going to go down the route of trying to get a cam locking tool. Now I just need to ask my friendly Mini specialist if I can borrow his! I hope to get the job started in a couple of weeks but I want to wait for my modified/enlarged throttle body to show up first, and the stainless studs for the cover. That way I do everything at once. I'll let you know how I get on.