messing with cockers, not worth it
absolute rubbish, thats the whole point of them.
however they dont always work if you do.
anyway, if you look on the planet site and then go to tech, it should have a manual to fit the blade frame.
and believe me, its worth having a go yourself, as learning how to time is essential for a cocker user. so make sure you have plenty of air available, and plenty of patience, but its worth every minute when you get it going, as you know you can do it if ever needed.