All the equipment on my Pearson 23 are original, circa 1985. Everything is very good condition overall, yet I have no manual for the boat. It is now time to replace the main and jib sheets. I am unsure of the exact sizes of these items. It seems the existing lines have perhaps "swollen" over time. Even though the sheets measure at 7/16", I suspect they were 3/8" originally. Since I am fairly new at all this, I wonder if someone has any specific information or good suggestion as to size. Also, any recommendation on a place to have a loop woven into the main sheet for attachment onto the pulley hardware? Thanks.