Hi all I am after a bit of advice, I have a 56 reg tdci 1.6 lx focus an I am after changing the cam belt I am competent doing the job as i rebuilt my 2wd cosworth engine but I did not need a locking tool as they are fairly self explanatory if you mark them up top dead center but the focus don't look so simple an i have bin told i need a locking tool but were would it go any advice would be help full thanks