I have a Skil Orbital Sander 125mm which has suddenly started throwing my Abranet discs. The velcro surface on teh sanding pad needs replacing - how best to go about this please? Whilst I cannot find my model anymore, there are a number of pads available on the net which look very similar - but the four locating screw holes in the centre need to be exactly right. Has anyone tried sanding off the velco hooks and applying a self-adhesive velcro pad on top?