Mast Tuning
Use the guage to get the lowers even side to side. There is no absolute setting for any of the shrouds or stays. The forward and aft lowers do not need to be the same. If you do not have an adjustable back stay, adjust the forstay, and backstay for upwind sailing (tight). If your backstay is adjustable, set the stays a little loose for downwind, and use the backstay adjuster to go upwind. I always set the forwards a little tighter than the afts, and when the backstay was tightened the mast would have a slight bend aft. Ask Bob Teeter (C42) about my mast tuning.Good luckMichael