I purchased new custom Titleist 712 AP1's with Graphite shafts 1" over in length, 3 degrees upright, a couple years ago. I've never quite felt they fit quite right even after getting fit by the NW Regional Titleist Rep. Even though I custom ordered them 1" over they turned out to be 1" shorter than my previous clubs which I found out later had a 1" longer length as a standard for their clubs. So after three years I finally went to the PGA Tour Store in Chandler, AZ and had them install a 1" plug in the graphite shaft to lengthen them an additional 1" and had new Midsized Golf Pride Tour grips installed. After playing a couple rounds and have now adapted to the changes all I can say is...... WOW!!! I played the best round I've played in years. And it appears I've picked up 5 to 10 yds per iron. Was overshooting pins the first round and dropped down a club the second round and all was cool. I haven't noticed any loss in accuracy, in fact as my confidence built I was hitting them straighter and longer. Using Titleist DT Solo golf balls I was getting good stick on the greens with the shorter Irons too. I am one happy Camper. PS: I am a 74 year old golfer who winters in AZ.