couldn't wait till Thursday so went strait into the work shop and follwed your advice, as well as the advice in the ST manual, replaced the retaining screw, turned it out two turns, placed the bent puller, tightened, and whacked it three time with a piece of hard wood 100x100x500mm, came strait off
now i can relax tomorrow and have a great day with the grand kids,
many thanks
Have a wonderfull Christmas everyone]