our boat has slightly more weather helm on a starboard tack than on a port tack. is this normal? we have had the boat for two years and this year i have been trying to remedy this problem. i tuned the rig and in the process found that the mast was not square to the boat. it leaned to port. i corrected this and it improved the balance but not completely. prior to tuning the rig there was lee helm on a port tack. after tuning there is weather helm but not as much as when on a starboard tack. neither is excesive. any suggestions on what i should look for as possible solutions?