Driver
The crown says 10.5. The ring is where the loft lives.
Most drivers that arrive on East Ohio have been “a little stronger” since a league night. The paint never moved. The adapter did. We jack the seat the head actually occupies, then ask the hoop whether the ball saw that seat.
What we change
Seats on a ring, not a new story about spin
A driver sleeve is a small gearbox. N is a seat. Plus and minus are other seats. Lie-bias clicks, if the ring has them, are seats that also tilt. We map the ones you own. We do not promise a factory chart that your particular adapter never cut.
After the map, three-ball clusters at two or three candidate seats. Marisol keeps the window, not the personal best. If the balloon over North Park is a face problem, we stop and say so. If it is a seat problem, we write the notch and torque it for the road.
North Side air
A river morning is not a desert noon
We note humidity on every driver ticket. A window that looks “strong enough” at 8:00 in April can still climb at 3:00 in August over the Allegheny. If you play most of your rounds in valley mornings, we bias the seat that way and write the bias on the copy so you do not undo it in a parking lot.