I have just purchased new WNS Delta C3 limbs for my 68" bow (25" riser). They are marked 30lbs for 68", but to my dismay, they are drawing 37lbs on medium limb bolt setting! I have turned the limb bolts out, but it is still 35.5lbs. My true draw length is 27.25 inches, so that doesn't seem to be the problem. I purchased them overseas, so taking them back to the store isn't so simple. Is this a common issue with WNS limbs? Are their draw weights determined at 28 inches as normal? I don't know what's going on.