I have a Titleist 910F, 15deg loft and I struggle to hit it consistently, majority of my shots are a pull to a pull/hook.

I have tried to set the adjustable loft to more open & higher loft but I am still struggling for consistent results. I have had a shaft suggested to replace, I’m curious as to whether it is wise to do the re-shafting or replace it with a 1i Hybrid (I have a 16deg as well)?