A couple of questions - were you fitted for the club and what is your reason for wantyto change?
If you were fitted then I’d stick with the recommendation. If not, then your best bet initially would be to pop along to a Thursday event.

Melvyn,

it will change the CG of the club and therefore the spin rates, launch and decent angles and carry will change for similar swings. By how much? It will depend on the golfer so a launch monitor would be required.

Check out Mark Crossfield on YT as he did a couple of Live Streams on Golf Tech and Low Spin last month (I'd skip first 30 secs of these) www.youtube.com/watch

As Steve points out if it's fitted why do you want to change and if not fitted get along to a Titleist Thursday.

Ant