Originally Posted by neileg
I don't understand. The cam sprockets should be loosened off so they can move relative to the crank.
Yes they should. Thats the reason why the cams need locking in place with cam locks. Without slackening the pulleys you won't be able to tension the belt correctly without the crank moving in realtion to the cams.
It is a lot ore difficult to describe how to do the job than it is to actually do it.