M_Boats: Shroud tension

Hi gang, I am usually too busy under such conditions, but I noticed that the lower lee shrouds on my M17 show a little slack when I beat to weather at wind speeds over 25 knots. I am reluctant to start a tightening regime because the shrouds are just loose enough for me to raise and lower the mast without loosening and tightening the turnbuckles each cycle. Should I be concerned with the situation? Can one expect some permanent stretching of the shrouds with use? Will the presumed slight bowing of the mast to leeward be a problem? Thanks in advance for your comments. Tom Jenkins M17 Scintilla