wire size

[charrette]

after performing a dockside tune we sailed the boat this weekend and it sailed really well. i only had to do some minor adjustments to the lower shrouds while under sail to keep the mast straight. we were able to get to hull speed (7.2knts) with apparent wind at 13knts. we were never able to get to hull speed since we have owned the boat (2 years). the only thing that still bugs me is that there is slightly more weather helm on a starboard tack vs. the port tack, neither is excessive. is it normal for boats to sail differently on different tacks? i am going to check the squareness of the mast once more using a different method. i got a tip from another rigger who uses a sail slug attached to a metal tape measure that he hoists with the main halyard and checks for squareness at each spreader and the top of the mast down to the chainplates. he said this was a more acurate method than using the halyard alone. any insight would be appreciated.