How To Hit Your Driver FURTHER And STRAIGHTER!

Hello there. I used to use the gray / orange tees, but over the last 6 months or so have used the pink / purple tees and have found that my accuracy has defiantly increased. I used to hit some really good shots with the Gray but got underneath a lot also so. Distance is around the same. but getting a draw shot almost every time now. I use a 12 deg Ping G425 but still get an average of 265/ 275 tars and i am 60.