Thank you for your suggestions. Unfortunately, I did not see your posts until after the weekend. Why does it take so long to fiddle and make small adjustments on race day ?! On Sunday a goodish breeze was blowing in Shropshire and sails and rigging a bit tighter than the previous week. I again tried raking the mast back and tightened the shrouds. The mast pivot pin came into contact with the mast, when the genoa was raised. I raced with the pivot pin not completely loose, although it could be turned (I can already hear the howls of anguish). I was finally experiencing some weather helm, rather than lee helm. I propose to carry out a further tweak to the rake this weekend and in doing so, completely free up the mast pivot pin and I will also bear in mind your other suggestions.