I recently got the new T100s with DG tour issue X100s and standard grips. I'm hitting them 10-15 yards shorter per club in comparison to my previous 718 AP2s with exact same shafts, lofts, and grips. I don't get it... I realized the swingweights are 2-3 points lighter, so I lead taped my brand new beautiful irons (which is frustrating), but I'm not sure why? Are the new T100 heads lighter than 718 AP2s? Why did I lose so much distance?