I had my mast re-stepped on Friday as my mast was quite far aft from the 25mm standard. The screws did not come undone after reasonable effort with an impact driver, so the rigger simply drilled them out and cut them flush. New holes were drilled and tapped in the proper position. Everything was remeasured and tensioned using the North Sails guide. Looking forward to tonight's race to see if I can point a little better now.