Vanguard V15 sail touching shrouds

Thread starter #1
I am very new to the art of sailing. I just recently got a Vanguard V15 which I sail in a local provincial park. I have a question regarding my V15. There are two cables that support the mast and these two cables pass through two pieces of metal extending from high up the mast, when I sail down wind and let out the main sheet, these two extended pieces of metal touch and rub against my main sail, I am afraid of wearing a hole in the sail. What am I to do about this problem ???