LL24

I would buy some lead tape and test to see what couple of grams will do to performance and feel for you before buying the kit. Just make sure you are putting it close to where the weights would go. Assuming the shaft, shaft length, grip weight all stay the same, adding swing weight will/may 1. Increase launch as there will be more shaft deflection (even if the additional weight is put forward) 2.change your strike pattern on the face. If the swing weight is too low for a person strikes tend to be heely and more spread out. 3. Your feel. There is a best swing weight for each person. For me D3.5 on my gamer works the best. At D4.5 my release gets inconsistent and I tend to block a lot to the right. That's also because D3.5 is the upper limit for me. The higher the swing weight the harder you have to work to close the face even if the weight is in the heel of the club. Why? You are rotating the club in the axis of the shaft not around the CG of the club head. 4. The MOI and CG of the heads. But the changes are small Best thing is to use some lead tape and test it yourself even on your irons. Trevino and Faldo and many other tour players do this all the time when they test for new equipment, thus you will see many pros with lead tape on their clubs. They are looking for the right feel.

By changing the weight from 9g to 11g or heavier the swing weight goes up as mentioned and head weight. As head weight goes up it will take more effort to close the club face. 2g of increase will make very little diffence but if you go up 4g or 6g you will be able to pick it up more. As head weight increases the shaft will play softer in flex. This is why for a 3 wood which is about 12g heavier than the driver you topically tip 1" before install. So the ball flight might be up a bit and the shaft will feel easier to load. As to the SureFit CG it does help with directional control but not significantly. 12g of weight is just not enough to shift the CG enough to see a significant ball flight difference. Lastly adding weight will increase the MOI of the driver, but again couple of grams will be insignificant.

Have you checked the centerness of hits with the new clubs? With new clubs it might take some time to adjust into. If the strikes are good then have someone check the lofts of the new clubs and the Mizunos.