Just to clear up a few things about the height settings of your tees and using the T-Set - You have a bag full of clubs and each one has its own (sometimes the same) height setting. The heights go between 12, 15, 20, 25, 30, 35, 40 and 45mm - eg: If you want to use your driver and want the correct height for it - place a ball on a tee - put your club behind the ball and see that you have half the ball showing above your club (from behind) - take the club away - take the ball from the tee and then using the T-Set, see which slot the tee fits into. If it fits into the 35mm slot, then you know that each time you pull your driver, you put your tee into the 35mm slot stick it in the turf and you know for certain your tee has been set up at the optimum height to get the best drive you can.
1 or 2mm in height difference can make a difference of 10 to 20 m (yards) in your drive - that can translate into better scores. We can help you set the perfect height but you still have to manufacture the right swing......... sorry can't help you with that one.
We are going to be upgrading the T-Set to include two more heights, two advertising faces and a divot tool - should be interesting.